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Aktuelle Forschungsprojekte

Publikationen

Liste der Publikationen 2004-2014

Liste der Publikationen 2015-2017

Publications Mikrowellenelektronik 2015-2018

Publikationen

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Anzahl der Einträge auf dieser Ebene: 429.

2018

Sirkeli, V. P. ; Yilmazoglu, O. ; Küppers, F. ; Hartnagel, H. L. (2018):
2.08 THz and 4.96 THz Room-Temperature Quantum Cascade Lasers Based on Non-Polar M-Plane ZnMgO/ZnO.
In: 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), ISSN 2162-2035,
DOI: 10.1109/IRMMW-THz.2018.8510344,
[Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Hajo, Ahid S. ; Nedeoglo, Natalia D. ; Nedeoglo, Dmitrii D. ; Preu, Sascha ; Küppers, Franko ; Hartnagel, Hans L. (2018):
Enhanced Responsivity of ZnSe‐Based Metal–Semiconductor–Metal Near‐Ultraviolet Photodetector via Impact Ionization.
In: physica status solidi (RRL) – Rapid Research Letters, S. 1700418, 12, (2), DOI: 10.1002/pssr.201700418,
[Online-Edition: https://onlinelibrary.wiley.com/doi/abs/10.1002/pssr.2017004...],
[Artikel]

Hartnagel, H. L. ; Sirkeli, V. P. ; Yilmazoglu, O. ; Hajo, A. S. ; Nedeoglo, N. D. ; Nedeoglo, D. D. ; Preu, S. ; Küppers, F. (2018):
Near-ultraviolet avalanche photodetectors based on bulk ZnSe.
In: 40th WOCSDICE Conference, Bucharest, Romania, [Konferenzveröffentlichung]

Küppers, F. ; Sirkeli, V. P. ; Yilmazoglu, O. ; Hajo, A. S. ; Nedeoglo, N. D. ; Nedeoglo, D. D. ; Preu, S. ; Hartnagel, H. L. (2018):
High-performance near-ultraviolet ZnSe-based photodetectors with Cr/Au and Ni/Au contacts.
In: 9th MSCMP Conference Moldova, Chisinau, Republic of Moldova, 25–28 September 2018, [Online-Edition: http://mscmp.phys.asm.md/],
[Konferenzveröffentlichung]

Küppers, Franko ; Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Al-Daffaie, Shihab ; Oprea, Ion ; Ong, Duu Sheng ; Hartnagel, Hans L (2018):
Internal Quantum Efficiency Enhancement of InGaN/GaN LEDs WITH Mg-Si pin-Doped GaN Quantum Barrier.
In: 9th International Conference on Materials Science and Condensed Matter Physics, Chisinau, Moldova, [Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Preu, Sascha ; Küppers, Franko ; Hartnagel, Hans L. (2018):
Proposal for a Monolithic Broadband Terahertz Quantum Cascade Laser Array Tailored to Detection of Explosive Materials.
In: Sensor Letters, 16, (1), DOI: 10.1166/sl.2018.3919,
[Artikel]

Steblova, O. ; Evtukh, A. ; Yilmazoglu, O. ; Yukhymchuk, V. ; Hartnagel, H. ; Mimura, H. (2018):
Photofield emission from SiGe nanoislands under green light illumination.
In: Opto-Electronics Review, S. 19 - 23, 26, (1), ISSN 1230-3402,
DOI: 10.1016/j.opelre.2017.11.003,
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S1230340217...],
[Artikel]

2017

Sirkeli, V. P. ; Yilmazoglu, Oktay ; Ong, D. S. ; Preu, Sascha ; Küppers, F. ; Hartnagel, Hans L. (2017):
Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals.
In: IEEE Transactions on Electron Devices, IEEE, S. 3482-3488, 64, (8), ISSN 1557-9646,
DOI: 10.1109/TED.2017.2718541,
[Online-Edition: http://ieeexplore.ieee.org/abstract/document/7968341/],
[Artikel]

Al-Daffaie, Shihab (2017):
Terahertz Nano-Photonic Semiconductor Devices.
In: Terahertz Technologies and Applications, [Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Al-Daffaie, Shihab ; Oprea, Ion ; Ong, Duu Sheng ; Küppers, Franko ; Hartnagel, Hans L. (2017):
Resonant tunneling transport in Zn x Be 1-x Se/ZnSe/Zn y Be 1-y Se asymmetric quantum structures.
In: Nanotechnology VIII, 10248, [Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Al-Daffaie, Shihab ; Preu, Sascha ; Küppers, Franko ; Hartnagel, Hans L. (2017):
1.33 THz room-temperature quantum cascade lasers based on ZnMgSe/ZnSe.
In: Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017 42nd International Conference on, [Konferenzveröffentlichung]

2016

Yilmazoglu, O. ; Al-Daffaie, S. ; Küppers, F. ; Hartnagel, H. L. (2016):
New photocathodes for THz vacuum microelectronic devices.
In: Energy, Materials, Nanotechnology (EMN) Meeting on Vacuum Electronics, Las Vegas, NV, USA, November 2016, [Konferenzveröffentlichung]

Sirkeli, V. P. ; Yilmazoglu, O. ; Al-Daffaie, S. ; Oprea, I. ; Ong, D. S. ; Kueppers, F. ; Hartnagel, H. L. (2016):
Effect of Si-Doping of the GaN Barrier on the Internal Quantum Efficiency of InGaN/GaN Light-Emitting Diodes.
In: 8th International Conference on Materials Science and Condensed Matter Physics / MSCMP-2016, Chisinau, Moldova, September 2016, [Konferenzveröffentlichung]

Al-Daffaie, Shihab (2016):
Terahertz systems and applications.
In: Terahertz Technologies and Applications, [Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Al-Daffaie, Shihab ; Oprea, Ion ; Ong, Duu Sheng ; Küppers, Franko ; Hartnagel, Hans L. (2016):
Efficiency enhancement of InGaN/GaN light-emitting diodes with pin-doped GaN quantum barrier.
In: Journal of Physics D: Applied Physics, IOP Publishing, S. 035108, 50, (3), [Artikel]

2015

Yilmazoglu, O. ; Al-Daffaie, S. ; Küppers, F. ; Hartnagel, H. L. (2015):
New photocathodes for THz vacuum microelectronic devices.
In: Energy, Materials, Nanotechnology (EMN) Meeting on Vacuum Electronics, Las Vegas, NV USA, [Online-Edition: http://www.emnmeeting.org/VE/],
[Konferenzveröffentlichung]

Hartnagel, H. L.
Sontea, Victor ; Tiginyanu, Ion (Hrsg.) (2015):
Plasmonic Effects for Enhanced Optical Mixing in View of THz Signal Generation.
In: 3rd International Conference on Nanotechnologies and Biomedical Engineering: ICNBME-2015, September 23-26, 2015, Chisinau, Republic of Moldova, Springer Singapore, In: 3rd International Conference on Nanotechnologies and Biomedical Engineering: ICNBME-2015, Chisinau, Republic of Moldova, ISBN 978-981-287-736-9,
[Online-Edition: http://dx.doi.org/10.1007/978-981-287-736-9_46],
[Konferenzveröffentlichung]

Sirkeli, V. P. ; Yilmazoglu, O. ; Küppers, F. ; Hartnagel, H. L. (2015):
Enhanced efficiency of p-GaN/n-ZnO light-emitting diodes by using NiO and ZnSe interlayers.
In: 3rd International Conference on Nanotechnologies and Biomedical Engineering ICNBME, Chisinau, Republic of Moldova, [Online-Edition: http://www.icnbme.sibm.md/home.html],
[Konferenzveröffentlichung]

Al-Daffaie, S. ; Yilmazoglu, O. ; Küppers, F. ; Hartnagel, H. (2015):
Fully integrated vertical nanocontact photomixer for continuous-wave terahertz generation.
In: 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), [Online-Edition: http://dx.doi.org/10.1109/IRMMW-THz.2015.7327568],
[Konferenzveröffentlichung]

Damm, C. ; Schwefel, H. G. L. ; Sedlmeir, F. ; Hartnagel, H. ; Preu, S. ; Weickhmann, C. (2015):
Selected emerging thz technologies.
In: Semiconductor Terahertz Technology: Devices and Systems at Room Temperature Operation, Chichester, UK, John Wiley & Sons, S. 340-382, [Online-Edition: http://dx.doi.org/10.1002/9781118920411],
[Buchkapitel]

Evtukh, Anatoliy ; Hartnagel, Hans ; Yilmazoglu, Oktay ; Mimura, Hidenori ; Pavlidis, Dimitris (2015):
Quantum Electron Sources for High Frequency Applications.
Wiley Online Library, [Online-Edition: http://dx.doi.org/10.1002/9781119037989.ch9],
[Buch]

Yilmazoglu, O. ; Al-Daffaie, S. ; Küppers, F. ; Hartnagel, H. L. ; Neo, Y. ; Mimura, H. (2015):
Ultrafast photocathodes based on n-doped graphene emitters on compound semiconductor photoswitches.
In: 28th International Vacuum Nanoelectronics Conference (IVNC), [Online-Edition: http://dx.doi.org/10.1109/IVNC.2015.7225573],
[Konferenzveröffentlichung]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Küppers, Franko ; Hartnagel, Hans L. (2015):
Effect of p-NiO and n-ZnSe interlayers on the efficiency of p-GaN/n-ZnO light-emitting diode structures.
In: Semiconductor Science and Technology, S. 1-19, 30, (065005), ISSN 0268-1242,
[Online-Edition: http://dx.doi.org/10.1088/0268-1242/30/6/065005],
[Artikel]

Hartnagel, H. L. ; Al-Daffaie, S. ; Yilmazoglu, O. (2015):
Plasmonics and Graphene for THz Generation by Optical Mixing.
In: The 4th Russia-Japan-USA Symposium on Fundamental & Applied Problems of Terahertz Devices & Technologies, At IMT, ISSP, Chernogolovka, Russia, ISSN 1648-8504,
[Online-Edition: https://www.researchgate.net/publication/280223417_Plasmonic...],
[Konferenzveröffentlichung]

Al-Daffaie, S. ; Yilmazoglu, O. ; Küppers, F. ; Hartnagel, H. L. (2015):
1-D and 2-D Nanocontacts for Reliable and Efficient Terahertz Photomixers.
In: IEEE Transactions on Terahertz Science and Technology, S. 398-405, 5, (3), ISSN 2156-342X,
[Online-Edition: http://dx.doi.org/10.1109/TTHZ.2015.2399772],
[Artikel]

Hartnagel, H. L. ; Al-Daffaie, S. ; Yilmazoglu, O. (2015):
Plasmonics in semiconductors and in Ag submicron wires and graphene.
In: Lithuanian Journal of Physics, S. 287-291, 55, (4), [Online-Edition: http://dx.doi.org/10.3952/physics.v55i4.3225],
[Artikel]

Sirkeli, Vadim P. ; Yilmazoglu, Oktay ; Küppers, Franko ; Hartnagel, Hans L. (2015):
Effect of p-NiO Interlayer on Internal Quantum Efficiency of p-GaN/n-ZnO Light-Emitting Devices.
In: Journal of Nanoelectronics and Optoelectronics, S. 811-818, 9, (6), [Online-Edition: http://dx.doi.org/10.1166/jno.2014.1687],
[Artikel]

Al-Daffaie, Shihab (2015):
Nanoelectrode based photomixer for continuous wave terahertz generation.
Göttingen, Sierke, TU Darmstadt, ISBN 978-3-86844-747-7,
[Dissertation]

Al-Mudhafar, Ahmed (2015):
Associated phenomena of high power transmission in communication satellites.
TU Darmstadt, [Dissertation]

Carpintero, Guillermo ; Garcia-Munoz, Luis Enrique ; Hartnagel, Hans ; Preu, Sascha ; Räisänen, Antti V. (2015):
Semiconductor TeraHertz Technology: Devices and Systems at Room Temperature Operation.
John Wiley & Sons, ISBN 978-111-892-039-8 ; 978-111-892-040-4 ; 978-111-892-042-8 (print),
[Online-Edition: http://dx.doi.org/10.1002/9781118920411],
[Buch]

Hartnagel, H. L. ; Al-Daffaie, S. ; Yilmazoglu, O. (2015):
Plasmonics in semiconductors and in Ag submicron wires and graphene.
In: Lithuanian Journal of Physics, 55, (4), [Online-Edition: http://dx.doi.org/10.3952/physics.v55i4.3225],
[Artikel]

Hartnagel, Hans L. ; Al-Daffaie, Shihab (2015):
Graphene Plasmonics for the Enhancement of THz-Signal Transfer.
In: The 39th European Workshop on Compound Semiconductor Devices and Integrated Circuits, [Konferenzveröffentlichung]

2014

Al-Daffaie, Shihab ; Yilmazoglu, Oktay ; Küppers, Franko ; Hartnagel, Hans (2014):
Single nanowire photomixer for reliable and high frequency continuous wave terahertz generation.
In: Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Preu, Sascha (2014):
Graphene THz Circuitry by Nano-Constriction Designs.
In: WOCSDICE 2014, [Konferenzveröffentlichung]

Yilmazoglu, O. ; Al-Daffaie, S. ; Küppers, F. ; Hartnagel, H. L. ; Neo, Y. ; Mimura, H. (2014):
Photocathodes based on graphene nanoplatelet emitters on semi-insulating GaAs photoswitch.
In: Vacuum Nanoelectronics Conference (IVNC), 2014 27th International, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Evtukh, Anatoli ; Al-Daffaie, Shihab ; Biethan, Jens-Peter ; Pavlidis, Dimitris ; Litovchenko, Vladimir ; Hartnagel, Hans L. (2014):
Electron field emission from nanostructured semiconductors under photo illumination.
In: Turkish Journal of Physics, The Scientific and Technological Research Council of Turkey, S. 543-562, 38, (3), [Artikel]

2013

Al-Daffaie, Shihab ; Yilmazoglu, Oktay ; Küppers, Franko ; Hartnagel, Hans (2013):
Graphene LTG-GaAs photomixer for reliable continuous wave terahertz generation.
In: Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on, [Konferenzveröffentlichung]

Hartnagel, Hans ; Ong, D. S. ; Al-Daffaie, Shihab (2013):
Proposal of a THz signal generator by ballistic electron resonance device based on graphene.
In: Quantum Electronics, S. 193, 33, [Artikel]

2012

Bengtsson, O. ; Maune, H. ; Gölden, F. ; Chevtchenko, S. ; Sazegar, M. ; Kurpas, P. ; Wiens, A. ; Jakoby, R. ; Heinrich, W. (2012):
Discrete Tunable RF-Power GaN-BST Transistors.
In: Proceedings of the European Microwave Conference 2012, [Konferenzveröffentlichung]

Schönherr, Daniel (2012):
Untersuchung breitbandiger THz-Komponenten: Schottkydetektoren und photokonduktive Elemente.
Darmstadt, TU Darmstadt, [Online-Edition: urn:nbn:de:tuda-tuprints-31004],
[Dissertation]

Al-Daffaie, Shihab ; Acedo, Paplo ; Hartnagel, Hans L. (2012):
Simulation of a CW THz camera scheme.
In: Proceedings of WOCSDICE-EXMATEC, [Artikel]

Al-Daffaie, Shihab ; Yilmazoglu, Oktay ; Küppers, Franko ; Hartnagel, Hans (2012):
INVITED Nanogrid-based vertically integrated photomixer for continuous wave terahertz generation.
In: Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on, [Konferenzveröffentlichung]

Koops, Hans W. P. ; Al-Daffaie, Shihab ; Hartnagel, Hans L. (2012):
Portable source with free electron beams for 0.1 to 10 THZ.
In: Proceedings of WOCSDICE-EXMATEC, [Artikel]

Koops, Hans W. P. ; Al-Daffaie, Shihab ; Hartnagel, Hans L. ; Rudzinski, A. (2012):
Development of a miniaturized Dynatron THz-Oscillator with a FEBIP system.
In: Vacuum Nanoelectronics Conference (IVNC), 2012 25th International, [Konferenzveröffentlichung]

Koops, Hans W. P. ; Rudzinski, Axel ; Nouvertné, Frank ; Al-Daffaie, Shihab ; Hartnagel, Hans L. (2012):
Portable 0.1 To 10 THz Radiation Source With Free Electron Beams.
In: 3rd ITG Int. Vacuum Electronics Workshop Physikzentrum Bad Honnef , Germany, [Konferenzveröffentlichung]

Schmitt, Silvia ; Scholz, A. ; Linn, Stefan ; Oechsner, Matthias ; Berger, Christina ; Hattendorf, H. ; Hartnagel, W. ; Sundermann, J. ; Eckertsberger, G. ; Schönhuber, B. (2012):
Modellierung des Kriechverhaltens hitzebeständiger Legierungen und Anwendung in der Lebens-dauerbewertung von Bauteilen im Industrieofenbau.
In: Beiträge zur 35. Vortragsveranstaltung Langzeitverhalten warmfester Stähle und Hochtemperatur-werkstoffe der Arbeitsgemeinschaft für warmfeste Stähle und der Arbeitsgemeinschaft für Hoch-temperaturwerkstoffe am 30. November 2012 , Düsseldorf, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Al-Daffaie, Shihab ; Hartnagel, Hans L. ; Joshi, R. ; Yadav, S. ; Schneider, J. J. ; Nick, C. ; Thielemann, C. (2012):
CNT photocathodes based on GaAs high-frequency photoswitches.
In: Vacuum Nanoelectronics Conference (IVNC), 2012 25th International, [Konferenzveröffentlichung]

2011

Maune, H. ; Sazegar, M. ; Zheng, Y. ; Zhou, X. ; Giere, A. ; Scheele, P. ; Paul, F. ; Binder, J. R. ; Jakoby, R. (2011):
Nonlinear Ceramics for Tunable Microwave Devices Part II: RF-Characteriziation and Component Design.
In: Microsystem Technologies, S. 213-224, 17, (2), [Artikel]

2008

Köberle, M. ; Göbel, T. ; Schönherr, D. ; Müller, S. ; Jakoby, Rolf ; Meissner, P. ; Hartnagel, H.-L. (2008):
Material Characterization of Liquid Crystals at THz-Frequencies using a Free Space Measurement Setup.
[Konferenzveröffentlichung]

2007

Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. (2007):
Design and characterization of Schottky structures for THz-applications.
In: Frequenz, S. 172-177, 61, [Artikel]

Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. (2007):
THz Schottky diodes on epitaxial AIGaAs-membrane.
Piscataway, NJ, IEEE Operations Center, In: [Elektronische Ressource] IRMMW-THz 2007 : conference digest of the Joint 32nd International Conference on Infrared and Millimeter Waves, and 15th International Conference on Terahertz Electronics : City Hall, Cardiff, UK, 3rd - 7rd September, 2007.- Pisc, [Konferenzveröffentlichung]

Dragoman, M. ; Cismaru, A. ; Müller, A. A. ; Dragoman, D. ; Hartnagel, Hans L. ; Plana, R. (2007):
RF NEMS-carbon-nanotube based nanoelectromechanical systems for microwave and millimeter wave applications.
29. June 2007 ; [proceedings of the 8th International Symposium on RF MEMS and RF Microsystems] / ed. by, Lluís Pradell ...- 1. ed.- Barcelona : CIMNE, In: MEMSWAVE 2007 : Barcelona, 26.- 29. June 2007 ; [proceedings of the 8th International Symposium on RF MEMS and RF Microsystems] / ed. by: Lluís Pradell ...- 1. ed.- Barcelona : CIMNE, 2007.-246 S.- ISBN: 978-84-96736-22-1, [Konferenzveröffentlichung]

Dragoman, M. ; Müller, A. ; Neculoiu, D. ; Konstantinidis, G. ; Grenier, K. ; Dubuc, D. ; Bary, L. ; Plana, R. ; Fourn, E. ; Flahaut, E. ; Hartnagel, Hans L. (2007):
Carbon nanotubes-based microwave and millimeter wave sensors.
In: European Microwave Week 2007, Munich, 8-12 Oct : proceedings, [Konferenzveröffentlichung]

Dragoman, M. ; Takacs, A. ; Muller, A. A. ; Hartnagel, Hans L. ; Plana, R. ; Grenier, K. ; Dubic, D. (2007):
Nanoelectromechanical switches based on carbon nanotubes for microwave and millimetre waves.
In: Applied physics letters, S. 113102-1 - 113102-3, 90, [Artikel]

Goebel, Thorsten ; Schoenherr, Daniel ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2007):
THz grating sensors for investigation of thin dielectric layers.
Piscataway, NJ, IEEE Service Center, In: 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference : [CLEO/Europe-IQEC 2007] ; Munich, Germany, 17 - 22 June 2007 / IEEE, [the Institute of Electrical and Electronics Engineers].- Piscataway, NJ : IEEE, [Konferenzveröffentlichung]

Goebel, Thorsten ; Schoenherr, Daniel ; Sydlo, Cezary ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2007):
Resonant metal gratings for THz material characterization.
Piscataway, NJ, IEEE Operations Center, In: [Elektronische Ressource] IRMMW-THz 2007 : conference digest of the Joint 32nd International Conference on Infrared and Millimeter Waves, and 15th International Conference on Terahertz Electronics : City Hall, Cardiff, UK, 3rd - 7rd September, 2007.- Pisc, [Konferenzveröffentlichung]

Halbritter, Hubert ; Sydlo, Cezary ; Koegel, Benjamin ; Riemenschneider, Frank ; Hartnagel, Hans L. ; Meissner, Peter (2007):
Impact of micromechanics on the linewidth and chirp performance of MEMS-VCSELs.
In: IEEE/LEOS journal of selected topics on quantum electronics, S. 367-373, 13, [Artikel]

Kunkel, R. ; Beling, A. ; Bach, H.-G. ; Mekonnen, G. G. ; Schmidt, D. ; Sydlo, Cezary ; Schoenherr, Daniel ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter (2007):
Monolithic integration of a waveguide-integrated p-i-n-photodiode and a planar antenna for THz applications.
In: Optical Terahertz Science and Topical Meeting (OTST 2007), Orlando, Florida, USA, March 2007, [Konferenzveröffentlichung]

Litovchenko, V. ; Evtukh, A. ; Semenenko, M. ; Grigoriev, A. ; Yilmazoglu, Oktay ; Hartnagel, Hans L. ; Sirbu, L. ; Tiginyanu, I. M. ; Ursaki, V. V. (2007):
Electron field emission from narrow band gap semiconductors (InAs).
In: Semiconductor science and technology, S. 1092-1096, 22, [Artikel]

Monsees, Michael ; Scholz, Alfred ; Berger, Christina ; Steller, Ingo ; Hartnagel, W. ; Schwass, G. ; Schubert, J. ; Ewald, Jürgen ; Rohde, W. (2007):
50 Jahre Arbeitsgemeinschaft Hochtemperaturwerkstoffe : Geschichte, Aufgaben und Ziele.
In: Langzeitverhalten warmfester Stähle und Hochtemperaturwerkstoffe : Beiträge zur 30. Vortragsveranstaltung der Arbeitsgemeinschaft für Warmfeste Stähle und der Arbeitsgemeinschaft für Hochtemperaturwerkstoffe am 30. November 2007 im Stahl-Zentrum in D, Düsseldorf, VDEh, [Buchkapitel]

Neculoiu, D. ; Konstantinidis, G. ; Müller, A. ; Kostopoulos, A. ; Vasilache, D. ; Mutamba, Kabula ; Sydlo, Cezary ; Hartnagel, Hans L. ; Bary, L. ; Plana, R. (2007):
Microwave FBAR structures fabricated using micromachined GaN membranes.
In: Proceedings of the 2007 IEEE MTT-S International Microwave Symposium, Honolulu, Hawai, June 3-8, 2007, [Konferenzveröffentlichung]

Nicolae, B. ; Chowdhury, D. Roy ; Hartnagel, Hans L. (2007):
Experimental and modelled configuration of double-barrier HBV based on Al0.7Ga0.3As/GaAs.
In: 14th International Workshop on the Physics of Semiconductor Devices, Date: DEC 17-20, 2007 Indian Inst Technol Mumbai INDIA.- S. 351-354, [Konferenzveröffentlichung]

Nicolae, B. ; Chowdhury, D. Roy ; Hartnagel, Hans L. (2007):
S Parameter Measurements of Superlattice Heterostructure Barrier Junctions towards THz Varactors.
In: Frequenz, S. 245-246, 61, [Artikel]

Nicolae, B. ; Chowdhury, D. Roy ; Pop, G. ; Hartnagel, Hans L. ; Pasquet, D. (2007):
The Planar Approach to a Al0.12Ga0.88N/GaN Based Double Barrier HBV.
In: Frequenz, S. 247-249, 61, [Artikel]

Ong, D. S. ; Hartnagel, Hans L. (2007):
Generation of THz signals based on quasi-ballistic electron reflections in double-heterojunction structures.
In: Semiconductor science and technology, S. 981-987, 22, [Artikel]

Ong, D. S. ; Hartnagel, Hans L. (2007):
Novel concept for THz signals generations in heterostructures.
In: Physica status solidi / Rapid research letters, S. 150-152, 1, [Artikel]

Ong, D. S. ; Hartnagel, Hans L. (2007):
A new concept for THz frequency multipliers.
In: Proceedings of the 2007 Asia Pacific Microwave Conference, Bangkok, Thailand, Dec. 11-14, 2007.- S. 1703-1706, [Konferenzveröffentlichung]

Schoenherr, Daniel ; Sydlo, Cezary ; Goebel, Thorsten ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter ; Bach, H.-G. ; Kunkel, R. ; Mekonnen, G. G. ; Zhang, R. (2007):
Characterization of THz emitter based on a high-speed p-i-n photodiode.
Piscataway, NJ, IEEE Operations Center, In: [Elektronische Ressource] IRMMW-THz 2007 : conference digest of the Joint 32nd International Conference on Infrared and Millimeter Waves, and 15th International Conference on Terahertz Electronics : City Hall, Cardiff, UK, 3rd - 7rd September, 2007.- Pisc, [Konferenzveröffentlichung]

Sigmund, Jochen ; Zogal, Karolina ; Lampin, J. F. ; Ivannikov, V. ; Sydlo, Cezary ; Feiginov, Michael N. ; Pavlidis, Dimitris ; Meissner, Peter ; Hartnagel, Hans L. (2007):
Low-temperature grown GaAsSb with sub-picosecond photocarrier lifetime for continuous-wave terahertz applications.
In: Proceedings of Topical Workshop on Heterostructure Microelectronic (TWHM), Kisarazu, Chiba, Japan, Aug. 2007, [Konferenzveröffentlichung]

Vicente, C. ; Hartnagel, Hans L. (2007):
Passive intermodulation at junctions.
In: Proceedings of the 2007 IEEE MTT-S International Microwave Symposium, Honolulu, Hawai, June 3-8, 2007, [Konferenzveröffentlichung]

Vicente, C. ; Wolk, D. ; Hartnagel, Hans L. ; Gimeno, B. ; Boria, V. E. ; Raboso, D. (2007):
Experimental analysis of passive intermodulation at waveguide flange bolted connections.
In: IEEE transactions on microwave theory and techniques, S. 1018-1028, Vol. 5, [Artikel]

Yilmazoglu, Oktay ; Hartnagel, Hans L. ; Pavlidis, Dimitris ; Evtukh, A. ; Litovchenko, V. ; Semenenko, M. ; Gorbanyuk, T. ; Grigoriev, A. (2007):
Pecularities of electron field emission from nanostructured GaN and AlGaN.
In: Proceedings of the 3rd Ukrainian Conference on Semiconductor Physics, Odessa, Ukraina, 17-22 June 2007.- S. 120, [Konferenzveröffentlichung]

2006

Biber, S. ; Schuer, J. ; Cojocari, Oleg ; Hartnagel, H.-L. ; Schmidt, L.-P. (2006):
Silicon micomachining and electrical characterization of a 600 GHz Schottky-diode mixer with integrated octagonal horn antenna.
In: Proceedings of the 4th ESA Workshop on Millimetre Wave Technology and Applications (ESA-MWTA-06) Workshop on Millimetre Wave Technology and Applications <4, 2006, Espoo>. - Millilab, Espoo, Finland, 2006, [Konferenzveröffentlichung]

Cojocari, Oleg ; Hartnagel, Hans L. (2006):
Generalized model of the metal/n-GaN Schottky interface and improved performance by electrochemical Pt deposition.
In: Journal of Vacuum Science and Technology B, S. 2544-2552, 24, [Artikel]

Dragoman, M. ; Cismaru, A. ; Hartnagel, H. ; Plana, R. (2006):
Reversible metal-semiconductor transitions for microwave switching applications.
In: Applied Physics Letters, S. 073503, 88, [Artikel]

Evtukh, A. ; Litovchenko, V. ; Semenenko, M. ; Yilmazoglu, O. ; Mutamba, K. ; Hartnagel, H. ; Pavlidis, D. (2006):
Formation of conducting nanochannels in diamond-like carbon films.
In: Semiconductor Science and Technology, S. 1326-1330, 21, [Artikel]

Halbritter, H. ; Sydlo, C. ; Koegel, B. ; Riemenschneider, F. ; Hartnagel, H. L. ; Meissner, Peter (2006):
Linewidth and chirp of MEMS-VCSELs.
In: IEEE Photonics Technology Letters, S. 2180-2182, 18, [Artikel]

Halbritter, Hubert ; Sydlo, Cezary ; Kögel, Benjamin ; Riemenschneider, F. ; Jatta, Sandro ; Hartnagel, Hans L. ; Meissner, Peter (2006):
Micromechanic effects and their impact on the characteristics of MEMS-tunable lasers.
Piscataway, NJ, IEEE Service Center, In: IEEE/LEOS International Conference on Optical MEMS and Their Applications, 2006 : 21 - 24 Aug. 2006, [Big Sky, MT]. - Piscataway, NJ : IEEE Service Center, 2006 ISBN: 0-7803-9561-1, [Konferenzveröffentlichung]

Mutamba, K. ; Sydlo, C. ; Yilmazoglu, O. ; Neculoiu, D. ; Konstantinidis, G. ; Georgakilas, A. ; Chatzopoulos, Z. ; Müller, A. ; Hartnagel, Hans L. (2006):
A new compound semiconductor technology for advanced RF MEMS applications.
In: MMS 2006 : Mediterranean Microwave Symposium ; September 18 - 21, 2006, Genova, Italy; [proceedings] / IEEE .... - 2006, [Konferenzveröffentlichung]

Mutamba, K. ; Yilmazoglu, Oktay ; Cojocari, Oleg ; Sydlo, Cezary ; Pavlidis, Dimitris ; Hartnagel, Hans L. (2006):
Technology of Wide-Bandgap Diode Struvtures for High Frequency Operation.
Piscataway, NJ, IEEE Operations Center, In: International Semiconductor Conference, 2006 : 29th edition ; September 27 - 29, 2006, Sinaia, Romania ; CAS 2006 / organized by National Institute for Research and Development in Microtechnologies (IMT-Bucharest). - Piscataway, NJ : IEEE Operations Cente, [Konferenzveröffentlichung]

Schuer, J. ; Biber, S. ; Cojocari, Oleg ; Sydlo, C. ; Schmidt, L.-P. ; Hartnagel, H.-L. (2006):
Comparative noise characterization and conversion loss measurements of Schottky diode mixers at 600~GHz.
In: WOCSDICE '06 : the 30th Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe <30, 2006, Fiskebäckskil, Sweden> .- 2006,S. 85-87, [Konferenzveröffentlichung]

Schür, Jan ; Biber, Stephan ; Cojocari, Oleg ; Sydlo, Cezary ; Schmidt, Lorenz-Peter ; Hartnagel, Hans-Ludwig (2006):
600 GHz waveguide mixer fabricated by combined conventional and silicon micromachining.
In: EuMA Þ Journal of the European Microwave Association, S. 250-256, 1, [Artikel]

2005

Chowdhury, D. Roy ; Saglam, M. ; Mutamba, K. ; Hartnagel, H. L. (2005):
A novel way to reduce conduction current in Al0:7Ga0:3As/GaAs heterostructure Barier Varactors.
In: Proceedings of the XIII International Workshop on Physics of Semiconductor Devices (IWPSD-2005) : December 13 - 17, 2005 / National Physical Laboratory, New Delhi. Ed.: Vikram Kumar ... Vol. 2, S. 817-821 ISBN: 81-7764947-7, [Konferenzveröffentlichung]

Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. ; Schmidt, L.-P. (2005):
DC and IF-noise performance optimisation of GaAs Schottky diodes for THz applications.
In: Semiconductor science and technology, S. 23-32, 20, [Artikel]

Cojocari, Oleg ; Sydlo, C. ; Hartnagel, H.-L. (2005):
WID : a new Schottky-Structure design for THz-applications.
In: IRMMW-THz 2005 : conference digest of the 2005 joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics <30, 2005, Williamsburg, Va.>, s. 447-448, [Konferenzveröffentlichung]

Cojocari, Oleg ; Sydlo, C. ; Hartnagel, H.-L. ; Biber, S. ; Schür, J. ; Schmidt, L.-P. (2005):
Schottky-structures for THz-Applications based on quasi-vertical design-concept.
In: International Symposium of Space THz-Technology ISSTT-05 <16, 2005, Göteborg, Sw.> : paper . - 2005, [Konferenzveröffentlichung]

Cojocari, Oleg ; Sydlo, Cezary ; Hartnagel, Hans L. ; Tiginyanu, I. M. (2005):
Quasi-vertical Schottky-structures for THZ-Applications.
In: Proceedings of the 4th International Conference on Microelectronics and Computer Science (ICMCSı05), September 15-17, 2005, Chisinau, Moldova, pp. 219-225, [Konferenzveröffentlichung]

Dragoman, M. ; Hartnagel, H. L. ; Tuovinen, J. ; Plana, R. (2005):
Microwave applications of carbon nanotubes.
In: Frequenz, S. 251-263, 59, [Artikel]

Handel, P. H. ; Tournier, A. G. ; Hartnagel, H. L. ; Mishra, U. K. ; York, R. (2005):
1/f Noise in GaN/AlGaN HFET Based Amplifiers.
In: Proceedings WOCSDICE : Workshop on Compound Semiconductor Devices and Integrated Circuits in Europe <29, 2005, Cardiff, UK>, S. 101-103, [Konferenzveröffentlichung]

Hartnagel, H. L. (2005):
Proposal for fine-tuning of current across MEMS device by quantum- electronic structure.
In: Frequenz, S. 206-207, 59, [Artikel]

Hartnagel, H. L. (2005):
The introduction of quantum electronic structures for MEMS devices.
In: Lithunian Journal of Physics, 45, [Artikel]

Litovchenko, V. ; Evtukh, A. ; Yilmazoglu, O. ; Mutamba, K. ; Hartnagel, H. L. ; Pavlidis, D. (2005):
Gunn effect in field-emission phenomena.
In: Journal of Applied Physics, S. 044911-1, 97, [Artikel]

Mendis, R. ; Sydlo, C. ; Sigmund, J. ; Feiginov, Michael N. ; Meissner, P. ; Hartnagel, H. L. (2005):
Spectral characterization of broadband THz antennas by photoconductive mixing : towards optimal antenna design.
In: IEEE Antennas and Wireless Propagation Letters, S. 85-88, 4, [Artikel]

Mottet, B. ; Sydlo, Cezary ; Mutamba, ; Cojocari, Oleg ; Hartnagel, Hans L. (2005):
RF and thermal design of compound semiconductor devices using MEMS approach.
In: Frequenz, S. 131-136, 59, [Artikel]

Schuer, J. ; Biber, S. ; Cojocari, Oleg ; Schmidt, L.-P. ; Hartnagel, H.-L. (2005):
600 GHz GaAs Schottky diode mixer in split-block technology.
In: IRMMW-THz 2005 : conference digest of the 2005 joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics <30, 2005, Williamsburg, VA.>, S. 469-470. - 2005, [Konferenzveröffentlichung]

Schür, J. ; Biber, S. ; Cojocari, Oleg ; Mottet, B. ; Schmidt, L.-P. ; Hartnagel, H.-L. (2005):
600 GHz heterodyne mixer in waveguide technology using a GaAs Schottky diode.
In: International Symposium of Space THz-Technology ISSTT-05 <16, 2005,Göteborg, Sw.>, paper. - 2005, [Konferenzveröffentlichung]

Sigmund, J. ; Sydlo, C. ; Hartnagel, H. L. ; Teissmann, R. ; Benker, N. ; Fuess, Hartmut ; Rutz, F. ; Koch, M. (2005):
Non-stoichiometric growth and precipitation formation in LTG-GaAsSb for THzapplications.
New York, NY, American Inst. of Physics, In: Papers from the 23rd North American Conference on Molecular Beam Epitaxy : [held at the University of California at Santa Barbara from 11 - 14 September 2005] / [Gerry Sullivan, proceedings ed.]. - New York, NY : American Inst. of Physics, 2006; S. 153, [Konferenzveröffentlichung]

Sigmund, Jochen ; Sydlo, Cezary ; Hartnagel, Hans L. ; Benker, Nathalie ; Fuess, Hartmut ; Rutz, F. ; Kleine-Ostmann, T. ; Koch, M. (2005):
Structure investigation of low-temperature-grown GaAsSb : a material for photoconductive terahertz antennas.
In: Applied physics letters, S. 25103-252105, 87, [Artikel]

Sydlo, C. ; Sigmund, J. ; Hartnagel, H. L. ; Mendis, R. ; Feiginov, Michael N. ; Meissner, P. (2005):
Planar Terahertz antenna optimisation.
Piscataway, NJ, IEEE Operations Center, In: Proceeding 2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics : Hilton Hawaiian Village, Honolulu, Hawaii, April 3 - 7, 2005. - Piscataway, NJ : IEEE Operations Center, 2005 ISBN 0-7803-9068-7, [Konferenzveröffentlichung]

Sydlo, Cezary ; Kögel, Benjamin ; Cojocari, Oleg ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter (2005):
Broadband power detector using a circularly-toothed planar logarithmic-periodic antenna.
In: Conference proceedings ANTEM 2005, 11th International Symposium on Antenna Technology and Applied Electromagnetics : Palais du Grand Large, Saint-Malo, France, June 15th - 17th, 2005 / Department of Electrical and Computer Engineering, [University of Mani, [Konferenzveröffentlichung]

Sydlo, Cezary ; Mendis, R. ; Sigmund, J. ; Feiginov, Michael N. ; Hartnagel, H. L. ; Meissner, P. (2005):
Binary optical mixing for broadband THz communication.
Piscataway, NJ, IEEE Operations Center, In: Proceedings 2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics : Hilton Hawaiian Village, Honolulu, Hawaii, April 3 - 7, 2005. - Piscataway, NJ : IEEE Operations Center, 2005 ISBN: 0-7803-9068-7, [Konferenzveröffentlichung]

Vicente, C. ; Hartnagel, H. L. (2005):
Passive-intermodulation analysis between rough rectangular waveguide flanges.
In: IEEE Transactions on Microwave Theory and Techniques, S. 2515-2525, 53, [Artikel]

Vicente, C. ; Mattes, M. ; Wolk, D. ; Hartnagel, H. L. (2005):
FEST3D : a simulation tool for multipactor prediction.
In: Proceedings of the International Workshop on Multipactor, Corona and Passive Intermodulation in Space RF Hardware (MULCOPIM 2005), ESTEC, Noordwijk, The Netherlande, 12-14. September 2005, pp 11-17, [Konferenzveröffentlichung]

Vicente, C. ; Mattes, M. ; Wolk, D. ; Hartnagel, H. L. ; Mosig, J. R. ; Raboso, D. (2005):
FEST3D : a simulation tool for corona prediction.
In: Proceedings of the International Workshop on Multipactor, Corona and Passive Intermodulation in Space RF Hardware (MULCOPIM, 5.2005), ESTEC, Noordwijk, The Netherlande, 12-14. September 2005, S. 227-233, [Konferenzveröffentlichung]

Vicente, C. ; Wolk, D. ; Hartnagel, H. L. ; Raboso, D. (2005):
An Investigation on Passive Intermodulation Generation at Waveguide Junctions.
In: Proceedings of the International Workshop on Multipactor, Corona and Passive Intermodulation in Space RF Hardware (MULCOPIM 5. 2005), ESTEC, Noordwijk, The Netherlande, 12-14. September 2005, S. 207-214, [Konferenzveröffentlichung]

Wolk, D. ; Vicente, C. ; Hartnagel, H. L. ; Mattes, M. ; Mosig, J. R. ; Raboso, D. (2005):
An investigation on the effect of fringing fields on multipactor breakdown.
In: Proceedings of the International Workshop on Multipactor, Corona and Passive Intermodulation in Space RF Hardware (MULCOPIM 5. 2005), ESTEC, Noordwijk, The Netherlande, 12-14.September 2005, S 93-99 [129] C. Vicente, M. Mattes, D. Wolk, H.L. Hartnagel, J., [Konferenzveröffentlichung]

2004

Altes, ; Mutamba, Kabula ; Heiderhoff, R. ; Hartnagel, Hans L. ; Balk, L. J. (2004):
Scanning near field thermal microscopy on a micromachined thin membrane.
In: Superlattices and microstructures, S. 465-476, 35, [Artikel]

Biber, S. ; Cojocari, Oleg ; Rehm, G. ; Mottet, Bastian ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004):
A novel system for systematic microwave noise and DC characterization of THz Schottky diodes.
In: IEEE transactions on instrumentation and measurement, S. 581-587, Vol. 5, [Artikel]

Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Hartnagel, Hans L. ; Schmidt, L.-P. (2004):
GaAs Schottky diode fabrication for THz-frequency mixer applications.
In: Workshop on Compound Semiconductor Device and Integrated Circuits <28, 2004, Smolenice>: Proceedings WOCSDICE '04 ...- S. 121-122, [Konferenzveröffentlichung]

Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Sydlo, Cezary ; Hartnagel, Hans L. ; Schmidt, L.-P. (2004):
IF-noise improvement of the GaAs Schottky diodes for THz-frequency mixer applications.
In: Conference proceedings / 12th European Gallium Arsenide and other Compound Semiconductors Application Symposium : Monday 11th & Tuesday 12th October 2004 ; [at European Microwave Week, Amsterdam, 11 - 15 October 2004] / [endorsed by IEEE; Electron Devices, [Konferenzveröffentlichung]

Cojocari, Oleg ; Biber, S. ; Rodriguez-Girones Arboli, Manuel ; Mottet, Bastian ; Marchand, L. ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004):
A new structural approach for uniform sub-micrometer anode metallization of planar THz Schottky components.
In: Semiconductor science & technology, S. 537-542, 19, [Artikel]

Cojocari, Oleg ; Popa, V. ; Ursaki, V. V. ; Tiginyanu, I. M. ; Hartnagel, Hans L. ; Daumiller, I. (2004):
GaN Schottky multiplier diodes prepared by electroplating : a study of passivation technology.
In: Semiconductor science and technology, S. 1273-1279, 19, [Artikel]

Cojocari, Oleg ; Popa, V. ; Ursaki, V. V. ; Tiginyanu, I. M. ; Mutamba, Kabula ; Saglam, Mustafa ; Hartnagel, Hans L. (2004):
Micrometer-size GaN Schottky-diodes for MM-wave frequency multipliers.
M. Thumm ..., ed.- Piscataway, NJ, IEEE Operations Center, In: Conference digest of the 2004 joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics : September 27 - October 1, 2004, University of Karlsruhe (TH), Karlsruhe, Germany / [sponsored b, [Konferenzveröffentlichung]

Dehe, Alfons ; Beilenhoff, Klaus ; Fricke, Klaus ; Klingbeil, Harald ; Krozer, Viktor ; Hartnagel, Hans L. (2004):
Microwave measurement.
In: Electrical measurements, signal processing and displays / ed. by John G. Webster. -, Atlanta, Ga., CRC Pr., S. Chapt. 19, Sect. 1, [Buchkapitel]

Evtukh, A. A. ; Hartnagel, Hans L. ; Litovchenko, V. G. ; Semenenko, M. O. ; Yilmazoglu, Oktay (2004):
Enhancement of electron field emission stability by nitrogen-doped diamond-like carbon film coating.
In: Semiconductor science & technology, S. 923-929, 19, [Artikel]

Handel, P. H. ; Hartnagel, Hans L. ; Sia, K. E. ; Mishra, U. K. ; York, R. (2004):
GaN HEMT geometry and piezoelectric quantum 1/f noise.
In: Workshop on Compound Semiconductor Device and Integrated Circuits <28, 2004, Smolenice>: Proceedings WOCSDICE '04 ...- S. 85-87, [Konferenzveröffentlichung]

Litovchenko, V. G. ; Evtukh, A. A. ; Kryuchenko, Yu. ; Goncharuk, N. M. ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hartnagel, Hans L. ; Pavlidis, Dimitris (2004):
Quantum size resonance tunneling in the field emission phenomenon.
In: Journal of applied physics, S. 867-877, 96, [Artikel]

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2004):
Continuous-wave terahertz system for spectroscopy and imaging.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits <2004>: Proceedings ..., [Konferenzveröffentlichung]

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2004):
Tunable CW-THz system with LTG-GaAs based log-periodic emitter.
In: Terahertz Workshop <2004, Freiburg>: Proceedings, [Konferenzveröffentlichung]

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2004):
Tunable CW-THz system with a log-periodic photoconductive emitter.
Piscataway, NJ, IEEE Operations Center, In: Conference digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics : September 27 - October 1, 2004, University of Karlsruhe (TH), Karlsruhe, Germany / [sponsored b, [Konferenzveröffentlichung]

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2004):
Tunable CW-THz system with a log-periodic photoconductive emitter.
In: Solid-state electronics, S. 2041-2045, 48, [Artikel]

Mendis, Rajind ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2004):
Coherent generation and detection of continuous THz waves using two photomixers driven by laser diodes.
Piscataway, NJ, IEEE Operations Center, In: Conference digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics : September 27 - October 1, 2004, University of Karlsruhe (TH), Karlsruhe, Germany / [sponsored b, [Konferenzveröffentlichung]

Mottet, Bastian ; Sydlo, Cezary ; Kögel, Benjamin ; Robillard, Q. de ; Cojocari, Oleg ; Hartnagel, Hans L. (2004):
The impact of process optimisation on planar THz-Schottky device reliability.
Piscataway, NJ, IEEE Service Center, In: 2004 IEEE International Reliability Physics Symposium proceedings : 42nd annual ; Phoenix, Arizona, April 25 - 29, 2004 / sponsored by the IEEE Electron Devices Society and the IEEE Reliability Society.- Piscataway, NJ : IEEE Service Center, 2004.- XII, 7, [Konferenzveröffentlichung]

Saglam, Mustafa ; Irvine, A. C. ; Hartnagel, Hans L. (2004):
Heterostructure barrier varactors on gold substrate.
In: European Workshop on Heterostructure Technology <13, 2004, Koutoulfari>: Proceedings HETECH '04, Oct. 3-6, 2004 ..., [Konferenzveröffentlichung]

Schür, J. ; Biber, S. ; Gumbmann, F. ; Mottet, Bastian ; Cojocari, Oleg ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004):
Micromachined split-block Schottky-diode mixer for 600GHz.
M. Thumm ..., ed.- Piscataway, NJ, IEEE Operations Center, In: Conference digest of the 2004 joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics : September 27 - October 1, 2004, University of Karlsruhe (TH), Karlsruhe, Germany / [sponsored b, [Konferenzveröffentlichung]

Sydlo, Cezary ; Kögel, Benjamin ; Cojocari, Oleg ; Hartnagel, Hans L. ; Meissner, Peter (2004):
Characterisation of a circularly-toothed planar logarithmic-periodic antenna for broadband power detection.
In: Frequenz, S. 207-210, 9/10, [Artikel]

Vicente, C. ; Mattes, M. ; Cervello, A. ; Wolk, D. ; Mottet, Bastian ; Hartnagel, Hans L. ; Mosig, J. ; Raboso, D. (2004):
Multipactor and corona discharge, prediction in rectangular waveguide based microwave components.
In: Filter Workshop : [International Workshop on Microwave Filters ; 13 - 15 September 2004, CNES, Toulouse, France / CNES, Centre National d'Etudes Spatiales. [Organized by CNES in collaboration with ESA].- Toulouse, 2004.-1 CD-ROM., [Konferenzveröffentlichung]

Vicente, C. ; Mattes, M. ; Cervello, A. ; Wolk, D. ; Mottet, Bastian ; Hartnagel, Hans L. ; Mosig, J. R. ; Raboso, D. (2004):
Prediction of corona discharge : towards a simulation tool for arbitrary geometries.
In: JINA Symposium <2004, Nice>: Proceedings ... 8.-11.11.2004, [Konferenzveröffentlichung]

Vincze, A. ; Kovac, J. ; Srnanek, R. ; Sigmund, Jochen ; Hartnagel, Hans L. ; Irmer, G. (2004):
Annealing behaviour of low temperature grown GaAs investigated by raman spectroscopy.
In: Fundamental problems of opto- and microelectronics : fourth Asia-Pacific conference ; APCOM 2004 ; Khabarovsk, Russia, September 13 - 16, 2004 ; proceedings.- Khabarovsk, 2004.- 508 S., [Konferenzveröffentlichung]

Vincze, A. ; Michalka, M. ; Podskocova, J. ; Sigmund, Jochen ; Kovac, J. ; Hartnagel, Hans L. (2004):
Annealing investigation of LT GaAs with AFM.
In: Fundamental problems of opto- and microelectronics : fourth Asia-Pacific conference ; APCOM 2004 ; Khabarovsk, Russia, September 13 -16, 2004 ; proceedings.- Khabarovsk, 2004.- 508 S., [Konferenzveröffentlichung]

Zverev, V. N. ; Muhammad, M. ; Rahman, S. ; Debray, P. ; Saglam, Mustafa ; Sigmund, Jochen ; Hartnagel, Hans L. (2004):
Magnetotransport properties of two-dimensional electron gas in AlSb/InAs quantum well structures designed for device applications.
In: Journal of applied physics, S. 6353-6356, 96, [Artikel]

2003

Biber, S. ; Cojocari, Oleg ; Rehm, G. ; Mottet, Bastian ; Schmidt, L.-P. ; Hartnagel, Hans L. (2003):
A novel system for systematic IF noise and DC characterization of THz Schottky diodes.
In: IEEE transactions on instrumentation and measurement, [Anderes]

Biber, S. ; Schmidt, L.-P. ; Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. (2003):
Systematic quality assessment of Schottky diodes for THz-applications.
Noordwijk, ESA Publ. Div., In: Workshop on Millimetre Wave Technology and Applications <3, 2003, Espoo>: Proceedings ...21-23 May 2003, Millilab, Espoo, Finland / ed. Juha Mallat.- Noordwijk: ESA Publ. Div., 2003.- 682 S.- (ESA WPP ; 212).- S. 237-242, [Konferenzveröffentlichung]

Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Biber, S. ; Schmidt, L.-P. ; Hartnagel, Hans L. (2003):
Whisker-device-based optimisation of fabrication process for planar THz Schottky diode.
Noordwijk, ESA Publ. Div., In: Workshop on Millimetre Wave Technology and Applications <3, 2003, Espoo>: Proceedings ...21-23 May 2003, Millilab, Espoo, Finland / ed. Juha Mallat.- Noordwijk: ESA Publ. Div., 2003.- 682 S.- (ESA WPP ; 212).- S. 255-260, [Konferenzveröffentlichung]

Ensling, David ; Hunger, Ralf ; Kraft, Daniel ; Mayer, Thomas ; Jaegermann, Wolfram ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Hartnagel, Hans L. (2003):
Pulse Plating of Pt on n-GaAs(100) Wafer Surfaces: Synchrotron Induced Photoelectron Spectroscopy and XPS of Wet Fabrication Processes.
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, S. 432-438, 200, ISSN 0168583X,
[Artikel]

Evtukh, A. A. ; Litovchenko, V. G. ; Litvin, Yu. M. ; Hartnagel, Hans L. ; Yilmazoglu, Oktay (2003):
Field emission from SiOx films deposited on Si and GaAs tip arrays.
In: IVMC, International Vacuum Microelectronics Conference <16, 2003, Toyonaka>: Technical digest ...- Osaka, 2003.- 314 S.- ISBN 4-8181-9515-4, [Konferenzveröffentlichung]

Hartnagel, Hans L. (2003):
Electron emission modulation effects in microsize structures.
In: Semiconductor physics, quantum electronics and optoelectronics, S. 62-67, Vol. 6, [Artikel]

Hartnagel, Hans L. ; Rodriguez-Gironés Arboli, Manuel (2003):
Current status and future prospects of semiconductor terahertz electronics.
In: IEICE transactions on electronics, S. 1911-1915, Vol. E, [Artikel]

Litovchenko, V. G. ; Evtukh, A. A. ; Litvin, Yu. M. ; Goncharuk, N. M. ; Hartnagel, Hans L. ; Yilmazoglu, Oktay ; Pavlidis, Dimitris (2003):
Pecularities of the electron field emission from quantum-size structures.
In: Applied surface science, S. 160-168, Vol. 2, [Artikel]

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2003):
Tunable CW-THz system with a log-periodic photoconductive emitter.
Piscataway, NJ, IEEE Service Center, In: International Semiconductor Device Research Symposium <2003, Washington, DC>: Symposium proceedings ...- Piscataway, NJ: IEEE Service Center, 2003.- 537 S.- ISBN 0-7803-8139-4.- S. 318-319, [Konferenzveröffentlichung]

Miao, Jianmin ; Hartnagel, Hans L. (2003):
High-energy ion implantation : an alternative technology for micromachining 3-dimensional GaAs structures.
Ohne Verlag / Selbstverlag, [Buch]

Saglam, Mustafa ; Mutamba, Kabula ; Megej, Alexander ; Sydlo, Cezary ; Hartnagel, Hans L. ; Daumiller, I. (2003):
Influence of polarization chages in Al 0.4 Ga 0.6 N/GaN barrier varactors.
In: Applied physics letters, S. 227-229, Vol. 8, [Artikel]

Saglam, Mustafa ; Schumann, B. ; Dure, K. ; Domoto, C. ; Megej, Alexander ; Rodriguez-Gironés Arboli, Manuel ; Müller, J. ; Judaschke, R. ; Hartnagel, Hans L. (2003):
High performance 450 GHz GaAs-based heterostructure barrier varactor tripler.
In: IEEE electron device letters, S. 138-140, 24, [Artikel]

Saglam, Mustafa ; Sigmund, Jochen ; Hartnagel, Hans L. (2003):
Einflüsse der Deckschichten auf die Ladungsträgerkonzentration und Elektronenbeweglichkeit in MBE-gewachsenen AlSb/InAs-Quantentöpfe.
In: 18. DGKK-Arbeitstreffen, Bremen, 11.-12.12.2003, Tagungsband.- S. 43, [Konferenzveröffentlichung]

Sigmund, Jochen ; Karova, K. ; Miehe, Gerhard ; Saglam, Mustafa ; Hartnagel, Hans L. ; Fuess, Hartmut (2003):
Investigation of a growth interruption under an As flux at AlSb/InAs interfaces with InSb bonds.
In: Journal of crystal growth, S. 526-531, [Artikel]

Valakh, M. Ya. ; Litovchenko, V. G. ; Strelchuk, V. V. ; Hartnagel, Hans L. ; Sigmund, Jochen (2003):
Manifestation of the intersubband plasmon-phonon excitations and the pecularities of interfaces in the Raman spectra of InAs/AlSb quantum well structures.
Moskva, Nauka [u.a.], In: International Workshop Nanophotonics <2003, Niznij Novgorod>: Proceedings ... / red. V. B. Smagin.- Moskva: Nauka [u.a.], 2003.- 136 S., [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Pavlidis, Dimitris ; Litvin, Yu. M. ; Hubbard, S. M. ; Tiginyanu, I. M. ; Mutamba, Kabula ; Hartnagel, Hans L. ; Litovchenko, V. G. ; Evtukh, A. A. (2003):
Field emission from quantum size GaN structures.
In: Applied surface science, S. 46-50, Vol. 2, [Artikel]

2002

Isermann, Rolf ; Breuer, Bert ; Hartnagel, Hans L. (Hrsg.) (2002):
Mechatronische Systeme für den Maschinenbau : Ergebnisse aus dem Sonderforschungsbereich 241 ...
Weinheim [u.a.], Wiley-VCH-Verl., ISBN 3-527-27730-7,
[Buch]

Debray, P. ; Zverev, V. N. ; Raichev, O. E. ; Hartnagel, Hans L. ; Sigmund, Jochen ; Saglam, Mustafa ; Kohn, E. ; Densienko, A. ; Ahmed, H. ; Irvine, A. C. ; Lee, S.-B. (2002):
A nanoscale electron waveguide for very high-speed analog-to-digital converters.
In: WOCSDICE <2002, Chernogolovka>: Proceedings ...- 2002.- S. 141, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Ichizli, V. ; Rodriguez-Girones Arboli, Manuel (2002):
Surface, interface issues in THz electronics.
In: Applied surface science, S. 428-436, 190, [Artikel]

Hartnagel, Hans L. ; Mutamba, Kabula (2002):
Power sensors for microwave and millimeter-wave frequencies.
In: Joint Symposium on Opto- and Microelectronic Devices and Circuits <2, 2002, Stuttgart>: Proceedings ...SODC 2002, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Mutamba, Kabula ; Brandt, Michael ; Yilmazoglu, Oktay (2002):
Verbindungshalbleitersensorik für mechatronische Systeme.
In: Mechatronische Systeme für den Maschinenbau : Ergebnisse aus dem Sonderforschungsbereich ... / Hrsg.: Rolf Isermann.- Weinheim: Wiley-VCH-Verl., 2002.- ISBN 3-527-27730-7.- S. 287-316, Weinheim, Wiley-VCH-Verl., [Buchkapitel]

Hartnagel, Hans L. ; Mutamba, Kabula ; Pfeiffer, J. (2002):
III-V compound MEMS and optical communication tunable filters.
In: Micromachined microwave devices and circuits.- [Bucuresti]: Ed. Acad. Romane, 2002.- ISBN 973-27-0908-1.- S. 10-23, Ed. Acad. Romane, [Artikel]

Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. (2002):
Process control and failure analysis implementation for THz Schottky-based components.
Oxford, Pergamon Pr., In: European Symposium on Reliability of Electron Devices, Failure Physics and Analysis <13, 2002, Bellaria>: Reliability of electron devices, failure physics and analysis / guest ed.: Fausto Fantini ...- Oxford: Pergamon Pr., 2002, [Konferenzveröffentlichung]

Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. (2002):
Process control methods for THz Schottky-based components.
Noordwijk, ESA Publ. Div., In: European Space Components Conference <2002, Toulouse>: Proceedings ... ESCCON 2002 .../ comp. by Robert A. Harris.- Noordwijk: ESA Publ. Div., 2002.- ISBN 92-9092-817-4, [Konferenzveröffentlichung]

Litovchenko, V. G. ; Evtukh, A. A. ; Goncharuk, N. M. ; Litvin, Yu. M. ; Hartnagel, Hans L. ; Yilmazoglu, Oktay (2002):
Anomalous field emission from quantum size structure.
In: International Vacuum Microelectronics Conference <15, 2002, Lyon>: Proceedings ... IVMC 2002.- Lyon, 2002.- PM.49, [Konferenzveröffentlichung]

Litvin, Yu. M. ; Evtukh, A. A. ; Yilmazoglu, Oktay ; Hartnagel, Hans L. (2002):
The influence of the self-organization nano-size structures on the electron field emission.
In: Abstracts, ... general conference of the European Physical Society, Vol. 2, [Konferenzveröffentlichung]

Megej, Alexander ; Beilenhoff, Klaus ; Schüßler, Martin ; Ziroff, A. ; Mottet, Bastian ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hamann, C. D. ; Baican, R. ; Hartnagel, Hans L. (2002):
Integrated microwave sensor for cavity-length measurement in machine engineering.
In: IEEE transactions on microwave theory and techniques, Institute of Electrical and Electronics Engineers (IEEE), S. 3070-3076, 5, (12), ISSN 1557-9670,
[Artikel]

Megej, Alexander ; Beilenhoff, Klaus ; Schüßler, Martin ; Ziroff, A. ; Mottet, Bastian ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hamann, C. D. ; Baican, R. ; Hartnagel, Hans L. (2002):
Integrated microwave sensor for cavity-length measurement with sub-millimeter accuracy.
Piscataway, NJ, IEEE Service Center, In: IEEE MTT S International Microwave Symposium digest 2002 ; vol. 2 / ed. Rob Hamilton.- Piscataway, NJ: IEEE Service Center, 2002.- ISBN 0-7803-7239-5.- S. 643-646, [Konferenzveröffentlichung]

Mutamba, Kabula ; Megej, Alexander ; Beilenhoff, Klaus ; Weinzierl, J. ; Hartnagel, Hans L. (2002):
Technology of compound semiconductor MEMS for millimeter-wave power measurement.
In: WOCSDICE <2002, Chernogolovka>: Proceedings ...- 2002.- S. 143-144, [Konferenzveröffentlichung]

Saglam, Mustafa ; Leo, E. ; Bozzi, M. ; Perregrini, L. ; Rodriguez-Girones Arboli, Manuel ; Arcioni, P. ; Hartnagel, Hans L. (2002):
Fabrication, testing and lumped element modeling of planar heterostructure barrier varactors.
London, CMP Europe, In: GAAS <10, 2002, Milano>: Conference Proceedings / GAAS 2002, the 10th European Gallium Arsenide and other Semiconductors Application Symposium ...- London: CMP Europe, 2002, [Konferenzveröffentlichung]

Saglam, Mustafa ; Schumann, B. ; Müllerwiebus, V. ; Megej, Alexander ; Auer, U. ; Rodriguez-Girones Arboli, Manuel ; Judaschke, R. ; Tegude, F. J. ; Hartnagel, Hans L. (2002):
450 GHZ mm-wave signal from frequency tripler with heterostructure barrier varactors on gold substrate.
In: Electronics letters, S. 657-658, Vol. 3, [Artikel]

Sigmund, Jochen ; Saglam, Mustafa ; Hartnagel, Hans L. ; Miehe, Gerhard ; Fuess, Hartmut (2002):
Influence of growth interruptions at AlSb/InAs interfaces on the atomic morphology and electron transport properties.
In: International Conference on Molecular Beam Epitaxy <12, 2002, San Francisco, Calif.>: Digest ...- 2002, [Konferenzveröffentlichung]

Sigmund, Jochen ; Saglam, Mustafa ; Hartnagel, Hans L. ; Zverev, V. N. ; Raichev, O. E. ; Debray, P. ; Miehe, Gerhard ; Fuess, Hartmut (2002):
Structural and transport characterization of AISb/InAs QW structures grown by MBE with two growth interruptions.
In: Journal of vacuum science & technology / B, S. 1174, 20, [Artikel]

Sydlo, Cezary ; Saglam, Mustafa ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. (2002):
Reliability investigations on HBV using pulsed electrical stress.
In: Microelectronics reliability, S. 1563-1568, 42, [Artikel]

Sydlo, Cezary ; Sigmund, Jochen ; Hartnagel, Hans L. ; Loata, G. ; Siebert, K. J. ; Roskos, H. G. (2002):
Efficient THz-emitters for low-temperature-grown GaAs photomixers.
Piscataway, NJ, IEEE Operations Center, In: International Conference on Terahertz Electronics <10, 2002, Cambridge>: Proceedings ... / ed. by J. M. Chamberlain.- Piscataway, NJ: IEEE Operations Center, 2002.- ISBN 0-7803-7630-7.- S. 60-62, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Pavlidis, Dimitris ; Litvin, Yu. M. ; Hubbard, S. M. ; Tiginyanu, I. ; Mutamba, Kabula ; Hartnagel, Hans L. ; Litovchenko, V. G. ; Evtukh, A. A. (2002):
Field emission from quantum size GaN whiskers.
In: International Vacuum Microelectronics Conference <15, 2002, Lyon>: Proceedings ... IVMC 2002.- Lyon, 2002.- QB3.07, [Konferenzveröffentlichung]

Isermann, R. ; Breuer, B. ; Hartnagel, H. (2002):
Mechatronische Systeme für den Maschinenbau. Ergebnisse aus dem Sonderforschungsbereich 241 ''Integrierte mechanisch-elektronische Systeme für den Maschinenbau (IMES)''.
Weinheim, Wiley-VCH, [Buch]

2001

Gottwald, P. ; Kräutle, H. ; Szentpali, B. ; Hartnagel, H. L. (2001):
Results on passivation of InP by photo-CVD SiO2 and SiNx obtained by using the low-frequency noise measurement technique.
In: Fluctuation and noise letters, S. S. L35-L43, 1, [Artikel]

Hartnagel, Hans L. ; Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel (2001):
Semiconductor technology for THz integration.
Uetikon, Zürich, Trans Tech Publ., In: UFPS - 11: International Symposium on Ultrafast Phenomena in Semiconductors <11, 2001, Vilnius>; Proceedings. - Uetikon, Zürich: Trans Tech Publ., 2002, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel (2001):
Surface/interface issues in THz electronics.
In: ICSFI-8: International Conference on the Formation of Semiconductor Interfaces <8, 2001, Sapporo>: Proceedings; Abstract, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Megej, A. ; Mutamba, K. (2001):
Microwave and millimeter-wave monolithic signal sources with MEMS-based power monitoring for sensing applications.
In: Office of Naval Research / US Department of the Navy: ONR Workshop on Physical Effects and Device/Circuit Interactions in Solid-State Devices <2001, Bar Harbor, ME>; Proceedings. S. 33, [Konferenzveröffentlichung]

Ichizli, Victoria M. ; Droba, M. ; Mutamba, K. ; Sigurdardottir, A. ; Hartnagel, H. L. (2001):
Comparative investigation of interface effect on transmission function of electrons and holes in InAs/AlSb-based heterostructures.
In: PCSI-28: International Conference on Physics and Chemistry of Semiconductor Interfaces <28, 2001, Orlando, Florida>; Proceedings, [Konferenzveröffentlichung]

Ichizli, Victoria M. ; Hartnagel, H. L. ; Mimura, H. ; Shimawaki, H. ; Yokoo, K. (2001):
Field emission from porous (100) GaP with modified morphology.
In: Applied physics letters, 79, [Artikel]

Ichizli, Victoria M. ; Rodriguez-Girones, M. ; Lin, Ch.-I. ; Szeliga, P. ; Hartnagel, H. L. (2001):
The effect of glas plasma on the deposition quality of Schottky metals and interconnect metallisation for planar diodes structure for THz applications.
In: International Conference on THz Electronics <9, 2001, Charlottesville, Virginia>: Proceedings, [Konferenzveröffentlichung]

Megej, Alexander ; Beilenhoff, K. ; Hartnagel, H. L. (2001):
Conditions for broadband MMIC voltage-controlled oscillators based on theory and experiments.
In: IEEE-MTT-S International Microwave Sympsoium Digest, S. 1419-1422, 3, [Artikel]

Megej, Alexander ; Beilenhoff, K. ; Sydlo, C. ; Hartnagel, H. L. (2001):
Fully monolithically integrated wide-band RF-source.
In: EuMC 2001: European Microwave Conference <31, 2001, London>; Proceedings. Vol. 3, S. 125-128, [Konferenzveröffentlichung]

Megej, Alexander ; Hartnagel, H. L. (2001):
Microwave source studies based on reflection-type oscillators and different HEMT-circuit configurations.
In: WOCSDICE 2001: Workshop on Compound Semiconductor Devices & Integrated Circuits <25, 2001, Cagliary>; Proceedings. S. 59-60, [Konferenzveröffentlichung]

Mimura, H. ; Yilmazoglu, Oktay ; Shimawaki, H. ; Yokoo, K. ; Mutamba, K. ; Hartnagel, Hans L. (2001):
Emission characteristics of a gallium arsenide wedge emitter monolithically fabricated with an air-bridge and a cantilever anode.
Piscataway, NJ, IEEE, In: IVMC 2001: International Vacuum Microelectronics Conference <14, 2001, Davis, CA>: Technical digest. - Piscataway, NJ: IEEE, 2001, [Konferenzveröffentlichung]

Mutamba, Kabula ; Beilenhoff, K. ; Megej, A. ; Woelk, C. ; Hartnagel, H. L. (2001):
Micromachined GaAs sensors for microwave and millimeter-wave power measurement.
In: mstnews, S. S. 42-43, [Artikel]

Saglam, Mustafa ; Bozzi, M. ; Megej, A. ; Rodriguez-Girones, M. ; Perregrini, L. ; Hartnagel, H. L. (2001):
Characterization of heterostructure-barrier-varactors for frequency multiplication.
In: International journal of infrared and millimeter waves, 22, [Artikel]

Saura, A. ; Monecke, J. ; Irmer, G. ; Tiginyanu, I. M. ; Gärtner, G. ; Hartnagel, H. L. (2001):
Fröhlich modes in porous III-V semiconductors.
In: Journal of physics, S. 6687-6706, [Artikel]

Sigmund, Jochen ; Saglam, M. ; Vogt, Alexander ; Hartnagel, H. L. ; Buschmann, V. ; Wieder, Thomas ; Fuess, H. (2001):
Microstructure analysis of ohmic contacts on MBE grown n-GaSb and investigation of submicron contacts.
In: Journal of crystal growth, S. 625-629, 227-22, [Artikel]

Stevens-Kalceff, M. A. ; Tiginyanu, I. M. ; Langa, S. ; Föll, H. ; Hartnagel, H. L. (2001):
Correlation between morphology and cathodoluminescence in porous GaP.
In: Journal of applied physics, 89, [Artikel]

Sydlo, Cezary ; Mottet, B. ; Ganis, H. ; Hartnagel, H. L. ; Krozer, V. ; Delage, S. L. ; Cassette, S. ; Chartier, E. ; Floriot, D. (2001):
Defect detection and modelling using pulsed electrical stress for reliability investigations of InGaP HBT.
Oxford, Pergamon, In: ESREF 2001: European Symposium on Reliability of Electron Devices <12, 2001, Arcachon>: Conference proceedings. Vol. 1, S. 1567-1571. - Oxford : Pergamon, 2001, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Brandt, M. ; Sigmund, J. ; Genc, E. ; Hartnagel, H. L. (2001):
Integrated InAs/GaSb 3D magnetic field sensors for "the intelligent tire".
In: Sensors and actuators, S. 59-63, A 94, [Artikel]

Yilmazoglu, Oktay ; Mimura, H. ; Mutamba, K. ; Cojocari, O. ; Hartnagel, H. L. ; Okamura, K. ; Shimawaki, H. ; Yokoo, K. (2001):
Generation of modulation beam with GaAs field-emitter structures.
In: IVEC 2001: International Vacuum Electronics Conference <2, 2001, Noordwijk>: Proceedings, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Mimura, H. ; Mutamba, K. ; Hartnagel, H. L. ; Okamura, K. ; Shimawaki, H. ; Yokoo, K. (2001):
Generation of a bunched beam by field-emitter structures.
Berlin, VDE-Verl., In: Displays and Vacuum Electronics <2001, Garmisch-Partenkirchen>: Proceedings. S. 263-267. - Berlin: VDE-Verl., 2001, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Mimura, H. ; Mutamba, K. ; Hartnagel, H. L. ; Shimawaki, H. ; Yokoo, K. (2001):
Emission behaviour of micromachined vertical field emitter with cantilever structure.
In: European Field Emission Workshop <3, 2001, Alicante>: Proceedings, [Konferenzveröffentlichung]

Yokoo, K. ; Okamura, K. ; Hasegawa, H. ; Mimura, H. ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hartnagel, Hans L. ; Ishizuka, H. ; Kawamura, Y. (2001):
Experiments of microwave and optical wave radiation using field emission micro cathode.
In: ISMOT 2001: International Symposium on Microwave and Optical Technology <9, 2001, Montreal>; Technical digest, [Konferenzveröffentlichung]

2000

Schüßler, M. ; Mottet, B. ; Sydlo, C. ; Krozer, V. ; Hartnagel, H. L. ; Jakoby, Rolf (2000):
Model for the Decrease in HBT Collector Current under DC Stress based on Recombination Enhanced Defect Reactions.
Dresden, Germany, In: 11th ESREF-Symposium, [Konferenzveröffentlichung]

Akar, I. ; Mutamba, K. ; Euterneck, C. ; Aarab, H. ; Coulibaly, S. ; Brecht, S. ; Hartnagel, H. L. (2000):
Technology of integrated application specific GaAs flow sensors.
In: HETECH 2000: European Workshop Heterostructure Technology <10, 2000, Ulm>: Proceedings, [Konferenzveröffentlichung]

Bozzi, M. ; Saglam, M. ; Rodriguez-Girones, M. ; Perregrini, L. ; Hartnagel, H. L. (2000):
A new evolutionary approach for the analysis and optimization of THz nonlinear circuits.
Berlin, Offenbach, VDE-Verl., In: International Conference on Terahertz Electronics <8, 2000, Darmstadt>. - Berlin, Offenbach: VDE-Verl., 2000, [Konferenzveröffentlichung]

Droba, Martin ; Beilenhoff, K. ; Hartnagel, H. L. ; Ratzinger, U. (2000):
180 degree bending systems for higher current heavy ion linacs.
In: EPAC 2000: European Particle Accelerator Conference <2000, Wien>: Proceedings. S. 1483-1485, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Lin, C. I. ; Rodriguez-Girones, M. ; Ichizli, V. ; Saglam, M. ; Szeliga, P. (2000):
Recent development in device technology for integrated THz circuits.
In: GAAS 2000: Gallium Arsenide and other Semiconductors Application Symposium <2000, La Defense, Paris>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Mutamba, K. ; Pfeiffer, J. (2000):
III-V compound materials for MEMS including filters.
In: International Electronics Devices and Materials Symposium <2000, Taiwan>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Mutamba, Kabula ; Brandt, M. ; Yilmazoglu, Oktay (2000):
Verbindungshalbleitersensoren für mechatronische Systeme.
In: Thema Forschung, S. S. 72-81, 6, [Artikel]

Hartnagel, Hans L. ; Mutamba, Kabula ; Yilmazoglu, Oktay (2000):
New aspects of quantum electronics based MEMS.
In: Cross-Straight Symposium on Microsystems Technologies <1, 2000, Tainan, Taiwan>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Pfeiffer, J. ; Peerlings, J. ; Samal, N. ; Meissner, P. (2000):
Fabry-Pérot filter for WDM.
In: Joint Symposium on Opto- and Microelectronic Devices and Circuits <2000, Nanjing, China>: Proceedings. S. 49-52, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Yilmazoglu, Oktay ; Mutamba, Kabula (2000):
Concepts of microwave power electronics based on electron field emission from structures fabricated in semiconducting materials.
In: Next Generation mm-Wave Solid State Power: Materials, Devices and Systems: Office of Naval Research Workshop <2000, S. Padre Island, Texas>; Technical digest, [Konferenzveröffentlichung]

Ichizli, Victoria M. ; Mutamba, K. ; Droba, M. ; Sigurdardottir, A. ; Hartnagel, H. L. (2000):
Interface tuning of the InAs/AlSb heterostructure-based quantum wells.
In: Journal of vacuum science and technology, S. S. 2279-2283, B 18, [Artikel]

Ichizli, Victoria M. ; Riemenschneider, R. ; Hartnagel, H. L. (2000):
Scanning tunneling spectroscopy characterisation of As+ implanted InP (100) single crystals.
In: Journal of vacuum science and technology, B 18, [Artikel]

Kravetsky, V. ; Tiginyanu, I. M. ; Hildebrandt, R. ; Marowsky, G. ; Pavlidis, D. ; Eisenbach, A. ; Hartnagel, H. L. (2000):
Nonlinear optical response of GaN layers on sapphire: the impact of fundamental beam interference.
In: Applied physics letters, S. S. 810-812, 76, [Artikel]

Lal, K. ; Hartnagel, H. L. ; Goswami, N. ; Thoma, P. (2000):
Experimental evaluation of on-chip measurement of charge transfer by X-rays.
In: Electronics letters, 36, [Artikel]

Lin, Chih-I. ; Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Saglam, Mustafa ; Szeliga, P. ; Hartnagel, Hans L. (2000):
From honey-comb to SMMIC: Schottky diodes at TU Darmstadt.
Berlin (u.a.), VDE-Verl., In: THz Conference 2000: 8th International Conference on Terahertz Electronics, 2000 Darmstadt, Techn. Univ., Inst. für Hochfrequenztechnik; Proceedings. S. 251-254. - Berlin (u.a.): VDE-Verl., 2000, [Konferenzveröffentlichung]

Lin, Chih-I. ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Saglam, Mustafa ; Szeliga, P. ; Hartnagel, Hans L. (2000):
Technological developments for THz electronics.
Berlin (u.a.), VDE-Verl., In: THz Conference 2000: 8th International Conference on Terahertz Electronics, 2000 Darmstadt, Techn. Univ., Inst. für Hochfrequenztechnik; Proceedings. S. 129-132. - Berlin (u.a.): VDE-Verl., 2000, [Konferenzveröffentlichung]

Lin, Chih-I. ; Saglam, Mustafa ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Szeliga, P. ; Hartnagel, Hans L. (2000):
Recent development of Pt/n-GaAs Schottky diodes for THz applications.
In: International Conference on Infrared and Millimeter Waves <25, 2000, Beijing, China>: Proceedings, [Konferenzveröffentlichung]

Manca, J. ; Croes, K. ; DeCeunink, W. ; DeSchepper, L. ; Dieval, B. ; Hartnagel, H. L. (2000):
High temperature time dependent dielectric breakdown of power MOSFET's.
In: The circuit breaker, [Anderes]

Megej, Alexander ; Beilenhoff, K. ; Hartnagel, H. L. (2000):
Fully integrated PHEMT voltage controlled oscillator with very high tuning bandwidth.
In: Conference Proceedings: EuMC: European Microwave Week - [incorporating the] 30th European Microwave Conference 2000, GAAS 2000: Gallium Arsenide and other Semiconductor Application Symposium <2000, La Defense, Paris>. S. 428-431, [Konferenzveröffentlichung]

Megej, Alexander ; Beilenhoff, K. ; Hartnagel, H. L. (2000):
Fully monolithically integrated feedback voltage controlled oscillator.
In: IEEE Microwave and guided wave letters, 10, [Artikel]

Mimura, H. ; Okamura, K. ; Shimawaki, H. ; Yokoo, K. ; Yilmazoglu, Oktay ; Hartnagel, Hans L. (2000):
GaAs lateral field emitters for generation of modulation beam using gunn effect.
In: IVMC 2000: International Vacuum Microelectronics Conference <13, 2000, Guanghou, China>; Technical digest, [Konferenzveröffentlichung]

Miranda-Pantoja, J. M. ; Lin, C.-I. ; Brandt, M. ; Rodriguez-Girones, M. ; Hartnagel, H. L. ; Sebastian, J. L. (2000):
Influence of reactive ion etching on the microwave trap noise generated in Pt/n-GaAs Schottky diode interfaces.
In: IEEE Electron device letters, 21, [Artikel]

Miranda-Pantoja, J. M. ; Lin, C.-I. ; Shalaan, M. ; Sebastian, J. L. ; Munoz, S. ; Hartnagel, H. L. (2000):
Monte Carlo simulation of microwave noise temperature in cooled GaAs and InP.
In: IEEE Transactions on microwave theory and techniques, S. S. 1275-1279, 48, [Artikel]

Monecke, J. ; Irmer, G. ; Sarua, A. ; Tiginyanu, I. M. ; Gartner, G. ; Hartnagel, H. L. (2000):
Optische Phononen und elektrische Eigenschaften poröser GaP-Membranen.
In: Frühjahrstagung der Deutschen Physikalischen Gesellschaft <2000, Regensburg> = Verhandlungen der Deutschen Physikalischen Gesellschaft; 35,4, [Konferenzveröffentlichung]

Mottet, Bastian ; Sydlo, Cezary ; Hartnagel, Hans L. (2000):
Pulsed electrical stress techniques for the detection of non-thermal lifetime-problems with semiconductor devices and their IC's.
In: GAAS 2000: Gallium Arsenide and other Semiconductor Application Symposium <2000, Paris>; Symposium Proceedings. S. 39-43, [Konferenzveröffentlichung]

Mutamba, Kabula ; Pfeiffer, J. ; Beilenhoff, K. ; Peerlings, J. ; Megej, A. ; Meissner, P. ; Hartnagel, H. L. (2000):
III-V compound MEMS solutions for sensors and optical communications.
In: Symposium on Microsystem Technology <2000, National Cheng Kung Univ., Taiwan>: Proceedings. S. 163-169, [Konferenzveröffentlichung]

Saglam, Mustafa ; Bozzi, M. ; Domoto, C. ; Megej, A. ; Rodriguez-Girones, M. ; Perregrini, L. ; Hartnagel, H. L. (2000):
AlGaAs HBV performance in frequency tripling at 255 GHz.
In: GAAS 2000: Gallium Arsenide and other Semiconductor Application Symposium <2000, La Defense, Paris>: Proceedings, [Konferenzveröffentlichung]

Saglam, Mustafa ; Bozzi, M. ; Domoto, C. ; Rodriguez-Girones, M. ; Perregrini, L. ; Hartnagel, H. L. (2000):
Al07Ga03As/GaAs HBV for 255 GHz tripling operation.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe <24, 2000, Aegean Sea, Greece>: Proceedings, [Konferenzveröffentlichung]

Saglam, Mustafa ; Bozzi, M. ; Rodriguez-Girones, M. ; Lin, C.-I. ; Megej, A. ; Perregrini, L. ; Hartnagel, H. L. (2000):
Characterization of heterostructure barrier varactors for 255 GHz tripling operation.
In: International Conference on Infrared and Millimeter Waves <25, 2000, Beijing, China>: Proceedings, [Konferenzveröffentlichung]

Saglam, Mustafa ; Megej, A. ; Sigmund, Jochen ; Rodriguez-Girones Arboli, Manuel ; Mutamba, Kabula ; Ichizli, Victoria M. ; Lin, C.-I. ; Hartnagel, Hans L. (2000):
III-V Material systems for heterostructure barrier varactors.
In: THz Conference 2000: 8th International Conference on Terahertz Electronics, 2000 Darmstadt, Techn. Univ., Inst. für Hochfrequenztechnik; Proceedings. S. 259-260 - Berlin (u.a.): VDE-Verl., 2000, [Konferenzveröffentlichung]

Sarua, A. ; Gärtner, G. ; Irmer, G. ; Monecke, J. ; Tiginyanu, I. M. ; Hartnagel, H. L. (2000):
Raman and IR-reflectance spectra of porous III-V semiconductor structures.
In: Physica status solidi, S. S. 207-211, A 182, [Artikel]

Sarua, A. ; Irmer, G. ; Monecke, J. ; Tiginyanu, I. M. ; Schwab, C. ; Grob, J.-J. ; Hartnagel, H. L. (2000):
Raman spectroscopy of porous and bulk GaP subjected to MeV-ion implantation and annealing.
In: Journal of applied physics, S. S. 7006-7012, 88, [Artikel]

Schwab, C. ; Tiginyanu, I. M. ; Sarua, A. ; Irmer, G. ; Monecke, J. ; Sigmund, J. ; Hartnagel, H. L. (2000):
Nanoporous membranes and heterostructures based on III-V compounds.
Dordrecht (u.a.), Kluwer Acad. Publ., In: NATO Advanced Research Workshop on Frontiers of Nano-Optoelectronic Systems: Molecular Scale Engineering and Processes <2000, Kiev>: Proceedings. - Dordrecht (u.a.): Kluwer Acad. Publ., 2000, [Konferenzveröffentlichung]

Schüßler, Martin ; Mottet, B. ; Sydlo, C. ; Krozer, V. ; Hartnagel, H. L. ; Jakoby, Rolf (2000):
Model for the decrease in HBT collector current under DC stress based on recombination enhanced defect reactions.
Oxford, Pergamon, In: ESREF 2000: European Symposium on Reliability of Electron Devices, Failure Physics and Analysis <11, 2000, Dresden>: Proceedings. S. 1733-1738. - Oxford: Pergamon, 2000, [Konferenzveröffentlichung]

Sigmund, Jochen ; Saglam, M. ; Cojocari, O. ; Tiginyanu, I. ; Hartnagel, H. L. (2000):
Untersuchungen von epitaktischem Überwachsen auf porösen GaP und n-GaAs Substraten.
In: Epitaxie von III/V-Halbleitern: 15. Workshop des DGKK-Arbeitskreises , 2000 Bad Dürkheim. Tagungsbd., [Konferenzveröffentlichung]

Sigmund, Jochen ; Saglam, M. ; Vogt, Alexander ; Hartnagel, H. L. ; Buschmann, V. ; Wieder, Thomas ; Fuess, H. (2000):
Microstructure analysis of Ohmic contacts on MBE grown n-GaSb layers and investigation of submicron contacts.
In: MBE-XI: International Conference on Molecular Beam Epitaxy <11, 2000, Beijing, China>: Abstract Book.S. 275, [Konferenzveröffentlichung]

Sydlo, Cezary ; Mottet, B. ; Schüßler, M. ; Brandt, M. ; Hartnagel, H. L. (2000):
A method for HBT process control and defect detection using pulsed electrical stress.
Oxford, Pergamon, In: ESREF 2000: European Symposium on Reliability of Electron Devices, Failure Physics and Analysis <11, 2000, Dresden>: Proceedings. S. 1449-1453. - Oxford: Pergamon, 2000, [Konferenzveröffentlichung]

Tiginyanu, I. ; Kravetsky, I. ; Pavlidis, D. ; Eisenbach, A. ; Hildebrandt, R. ; Marowsky, G. ; Hartnagel, H. L. (2000):
Nonlinear optical characterization of GaN layers grown by MOCVD on sapphire.
In: MRS Internet journal nitride semiconductor research. 5S1, W11.52 (2000), [Artikel]

Tiginyanu, I. ; Kravetsky, I. V. ; Marowsky, G. ; Monecke, J. ; Cordts, W. ; Hartnagel, H. L. (2000):
Semiconductor sieves as novel materials for nonlinear optical applications.
In: Materials Research Society: Fall Meeting <2000, Boston, Mass.>. Abstract Booklet; Report ES.13, [Konferenzveröffentlichung]

Tiginyanu, I. ; Kravetsky, I. V. ; Marowsky, G. ; Monecke, J. ; Hartnagel, H. L. (2000):
Design of new nonlinear optical materials based on porous III-V compounds.
In: Physica statis solidi, S. S. 557-560, b 221, [Artikel]

Tiginyanu, I. ; Kravetsky, I. V. ; Monecke, J. ; Cordts, W. ; Marowsky, G. ; Hartnagel, H. L. (2000):
Semiconductor sieves as nonlinear optical materials.
In: Applied physics letters, S. S. 2415-2417, 77, [Artikel]

Tiginyanu, I. ; Langa, S. ; Hjort, K. ; Monecke, J. ; Hartnagel, H. L. (2000):
Nanotexturization of III-V compounds for THz-wave generation.
Berlin (u.a.), VDE-Verl., In: THz Conference 2000: 8th International Conference on Terahertz Electronics, 2000 Darmstadt Techn. Univ., Inst. für Hochfrequenztechnik. - Berlin (u.a.): VDE-Verl., 2000. Abstract Booklet, S. 275, [Konferenzveröffentlichung]

Tiginyanu, I. ; Schwab, C. ; Sarua, A. ; Irmer, G. ; Monecke, J. ; Sigmund, J. ; Hartnagel, H. L. (2000):
Optical characteristics of nanostructured III-V compounds.
Dordrecht (u.a.), Kluwer Acad. Publ., In: NATO Advanced Research Workshop on Frontiers of Nano-Optoelectronic Systems: Molecular Scale Engineering and Processes <2000, Kiev>: Proceedings. - Dordrecht (u.a.): Kluwer Acad. Publ., 2000, [Konferenzveröffentlichung]

Yilmazoglu, Oktay ; Hartnagel, H. L. ; Mimura, H. ; Okumura, K. ; Shimawaki, H. ; Yokoo, K. (2000):
Gunn effect based modulationbeam generation with GaAs lateral field emitter structures.
In: European Field Emission Workshop <2, 2000, Segovia>: Proceedings, [Konferenzveröffentlichung]

Yokoo, K. ; Okamura, K. ; Mimura, H. ; Yilmazoglu, Oktay ; Arslan, D. ; Hartnagel, Hans L. ; Ishizuka, H. (2000):
Field emission studies for microwave and optical wave generation.
Berlin (u.a.), VDE-Verl., In: THz Conference 2000: 8th International Conference on Terahertz Electronics, 2000 Darmstadt Techn. Univ., Inst. für Hochfrequenztechnik; Technical digest. - Berlin (u.a.): VDE-Verl., 2000, [Konferenzveröffentlichung]

1999

Arcioni, P. ; Bozzi, M. ; Conciauro, G. ; Perregrini, L. ; Hartnagel, H. L. ; Shalaan, M. (1999):
An efficient algorithm for the analysis and optimization of quasi-optical frequency multipliers.
In: Atti della Fondazione Giorgio Ronchi (Firenze), S. 368-373, 54, [Artikel]

Beilenhoff, Klaus ; Mutamba, K. ; Simon, A. ; Hartnagel, H. L. (1999):
III-V Semiconductor structuring for mm and sub-mm waves.
In: Workshop on Micromachined Microwave and Millimeter-Wave Antennas and Circuits <1999, München>: Workshop Proceedings, [Konferenzveröffentlichung]

Berberich, Stephan ; Godignon, P. ; Millan, J. ; Planson, D. ; Hartnagel, H. L. ; Senses, A. (1999):
Electrical characterisation of MNOS devices on p-type 6H-SiC.
In: Diamond and related materials, S. 305-308, 8, [Artikel]

Berberich, Stephan ; Godignon, P. ; Morvan, E. ; Fonseca, L. ; Millan, J. ; Hartnagel, H. L. (1999):
Electrical characterisation of Si3N4/SiO2 double layers on p-type 6H-SiC.
In: Workshop on Dielectrics <10, 1999, Barcelona>: Proceedings, [Konferenzveröffentlichung]

Facsko, S. ; Dekorsy, T. ; Trappe, C. ; Kurz, H. ; Vogt, Alexander ; Hartnagel, H. L. (1999):
Formation of ordered nanoscale semiconductor dots by ion sputtering.
In: American Association for Advance of Science, S. 1551-1553, 285, [Artikel]

Hartnagel, Hans L. (1999):
Proposal of a new type of non-linear component for harmonic extraction.
In: Frequenz, S. 5-6, 53, [Artikel]

Hartnagel, Hans L. (1999):
THz-device technology for monolithic integration using III-V semiconductors.
In: International Conference Terahertz Electronics <7, 1999, Nara, Japan>: IEEE Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Brandt, M. ; Mayer, K. ; Mutamba, Kabula ; Yilmazoglu, Oktay ; Megej, Alexander ; Lin, C. I. ; Rodriguez, M. (1999):
Contact free sensor signal transfer by microwave and RF links.
In: COMITE'99: International Conference on Microwave Techniques <1999, Paradubice>; Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Lin, C. I. (1999):
Passivation of compound-semiconductor surfaces for low-noise terahertz devices.
In: SSP'99: International Seminar on Semiconductor Surface Passivation <1,1999, Ustron>; Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Mutamba, K. ; Brandt, M. ; Pfeiffer, J. ; Riemenschneider, R. ; Meißner, P. ; Breuer, B. ; Hennecke, Dietmar K. ; Stoffel, Bernd (1999):
III-V-Micromechanics for sensing applications in mechanical engineering and for optical communications.
In: WOCSEMMAD'99 <1999, New Orleans>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Mutamba, K. ; Pfeiffer, J. ; Riemenschneider, R. ; Peerlings, J. (1999):
Compound semiconductor MEMS for sensing and optical communication systems.
In: Compound semiconductor, S. 68-72, 5, [Artikel]

Hartnagel, Hans L. ; Pfeiffer, J. ; Mutamba, K. ; Peerlings, J. ; Riemenschneider, R. ; Meißner, P. (1999):
III-V Membrane structures for tunable Fabry-Pérot filters and sensor applications.
In: COMMAD'98: Conference on Optoelectronic and Microelectronic Materials and Devices <1999, Perth, Australia>; Proceedings. S. 49-56, [Konferenzveröffentlichung]

Hillenbrand, Joachim ; Angert, N. ; Hartnagel, H. L. ; Neumann, R. (1999):
Depolarization RADII of latent heavy-ion racks in poly(vinylidene fluoride).
In: Gesellschaft für Schwerionenforschung: GSI-Preprint, 99-07, [Anderes]

Hillenbrand, Joachim ; Angert, N. ; Hartnagel, H. L. ; Neumann, R. (1999):
NIM B beam interactions with materials and atoms.
In: Nuclear instruments and methods in physics research B, 151, [Artikel]

Ichizli, Victoria M. ; Vogt, Alexander ; Sigurdardottir, A. ; Tiginyanu, I. M. ; Hartnagel, H. L. (1999):
Tunneling spectroscopy of AlAs and InSb interfaces in InAs/AlSb heterostructures.
In: Semiconductor science and technology, S. 143-147, 14, [Artikel]

Lal, K. ; Goswami, N. ; Miao, J. ; Hartnagel, H. L. (1999):
High-resolution X-ray diffraction study of free-standing gallium arsenide coiled membrane force sensors produced by micromachining.
In: Indo-Russian Workshop on Micromechanical Systems = SPIE Proceedings. Vol. 3903 (1999), [Konferenzveröffentlichung]

Lal, K. ; Goswami, N. ; Miao, J. ; Hartnagel, H. L. (1999):
Structural characterization of free-standing gallium arsenide coiled membranes produced by micromachining.
In: Journal of applied crystallography, 32, [Artikel]

Lin, Chih-I. ; Vogt, Alexander ; Saglam, M. ; Hartnagel, H. L. (1999):
GaAs-Schottkydioden mit InAs-Elektrode.
In: MBE: Molecular Beam Epitaxy Workshop <1999, Würzburg>; Proceedings, [Konferenzveröffentlichung]

Matulionis, A. ; Aninkevicius, V. ; Liberis, J. ; Matulioniene, I. ; Berntgen, J. ; Heime, K. ; Hartnagel, H. L. (1999):
Hot-electron energy relaxation , noise, and lattice strain in InGaAs quantum well channels.
In: Applied physics letters, 74, [Artikel]

Micheel, Lutz ; Sigurdardottir, A. ; Hartnagel, H. L. ; Mutamba, K. (1999):
GaAs- and InP-based technologies of resonant tunneling devices.
In: International Workshop on Post-Binary Ultra-Large-Scale Integration systems <8, 1999, Freiburg im Breisgau>: Proceedings, [Konferenzveröffentlichung]

Micheel, Lutz ; Sigurdardottir, A. ; Hartnagel, H. L. ; Mutamba, K. (1999):
Programmable HBT-Quantum dot structures for arithmetic MVL.
In: International Workshop on Post-Binary Ultra-Large-Scale Integration Systems <8, 1999, Freiburg im Breisgau>: Proceedings,, [Konferenzveröffentlichung]

Mier, A. ; Pascual, J. P. ; Beilenhoff, K. ; Rheinfelder, C. ; Luy, J. F. ; Hartnagel, H. L. (1999):
Design of a 38 GHz small signal amplifier for a coplanar Si/SiGe MMIC technology process.
In: Workshop on CAD and Verification of Millimeter-Wave and Submillimeter-Wave Circuits <1999, München>: Workshop Proceedings, [Konferenzveröffentlichung]

Miranda-Pantoja, J. M. ; Lin, C. I. ; Shalaan, M. ; Hartnagel, H. L. ; Sebastian, J. L. (1999):
Influence of the minimization of self-scattering events on the Monte Carlo simulation of carrier transport in III-V semiconductors.
In: Semiconductor science technology, S. 804-808, 14, [Artikel]

Mutamba, Kabula ; Sigurdardottir, A. ; Vogt, Alexander ; Pfeiffer, J. ; Behner, U. ; Di Carlo, A. ; Hartnagel, H. L. (1999):
Micromachined pressure sensors with AlGaAs/GaAs- and InAs/AlSb/GaSb-resonant tunneling diodes.
In: Annual Device Research Conference <57, 1999, Santa Barbara, Calif.>: Digest, [Konferenzveröffentlichung]

Pfeiffer, Joachim ; Peerlings, J. ; Riemenschneider, Rolf ; Genovese, R. ; Aziz, M. ; Böhm, G. ; Amann, Markus-Christian ; Meissner, Peter ; Hartnagel, Hans L. (1999):
InP-based bulk-micromachined tunable filter applications for WDM systems.
In: SPIE Photonics East <1999, Boston>: Proceedings, [Konferenzveröffentlichung]

Pfeiffer, Joachim ; Riemenschneider, R. ; Mutamba, K. ; Peerlings, J. ; Afshar, B. E. ; Baaser, Herbert ; Grunert, D. ; Meissner, P. ; Hartnagel, H. L. (1999):
Indium phosphide based bulked micromachining technology for micromechanically tunable WDM filter applications.
In: TRANSDUCERS'99 <1999, Sendai, Japan>: Proceedings. S. 380-383, [Konferenzveröffentlichung]

Sarua, A. ; Tiginyanu, I. M. ; Ursaki, V. V. ; Irmer, G. ; Monecke, K. ; Hartnagel, H. L. (1999):
Charge carrier distribution in free-standing porous GaP membranes studied by Raman spectroscopy.
In: Solid state communications, S. 581-585, 112, [Artikel]

Shaalan, Mohamed ; Beilenhoff, K. ; Bozzi, M. ; Arcioni, P. ; Conciauro, G. ; Hartnagel, H. L. (1999):
Technology and results of quasi-optical multipliers.
In: Workshop on CAD and Verification of Millimeter-Wave and Submillimeter-Wave Circuits <1999, München>: Workshop Proceedings, [Konferenzveröffentlichung]

Sigurdardottir, Anna ; Megej, A. ; Beilenhoff, K. ; Hartnagel, H. L. (1999):
Oscillator circuit-simulations using a novel, mathematically robust large-signal equivalent model for DBRTD.
In: EUMC'99: European Microwave Conference <29, 1999, München>; Proceedings. S. 270-273, [Konferenzveröffentlichung]

Tiginyanu, I. ; Ursaki, V. V. ; Raptis, Y. S. ; Stergiou, V. ; Anatassakis, E. ; Hartnagel, H. L. ; Vogt, Alexander ; Prevot, B. ; Schwab, C. (1999):
Raman modes in porous GaP under hydrostatic pressure.
In: Physica status solidi, S. 281-286, 211, [Artikel]

Wischmeyer, Frank ; Niemann, E. ; Hartnagel, H. L. (1999):
Improvements of the SiC homoepitaxy process in a horizont cold-wall CVD reactor.
In: Journal of electronic materials, S. 173-177, 28, [Artikel]

Dehe, A. ; Beilenhoff, K. ; Fricke, A. ; Klingbeil, Harald ; Krozer, V. ; Hartnagel, H. L. (1999):
Microwave measurement.
In: J. G. Webster, editor, The Measurement, Instrumentation and Sensors Handbook, chapter 55.1-55.5. CRC Press, Boca Raton, [Artikel]

1998

Arcioni, P. ; Bozzi, M. ; Conciauro, G. ; Hartnagel, H. L. ; Perregrini, ; Sacchi, ; Shaalan, M. ; Weinzierl, (1998):
A 430.5 GHz Quasi-Optical HBV Frequency Trip 1 er.
In: International Symposium on Space Terahertz Technology <9, 1998, Pasadena, Calif.>: Proceedings. S. 493-500, [Konferenzveröffentlichung]

Arcioni, P. ; Bozzi, M. ; Conciauro, G. ; Hartnagel, H. L. ; Perregrini, L. ; Shaalan, M. (1998):
A novel CAD-tool for the optimization of quasi-optical frequency multipliers.
In: ESA Workshop on Millimeter Wave Technology and Applications <2, 1998, Espoo, Finland>: Proceedings. S. 479-484, [Konferenzveröffentlichung]

Arcioni, P. ; Bozzi, M. ; Conciauro, G. ; Hartnagel, H. L. ; Perregrini, L. ; Shaalan, M. ; Weinzierl, (1998):
Design and optimisation of quasi-optical frequency multipliers.
In: International Conference on Infrared and Millimeter Waves <23, 1998, Colchester, UK>: Proceedings, [Konferenzveröffentlichung]

Arcioni, P. ; Conciauro, G. ; Perregrini, L. ; Bozzi, M. ; Shaalan, M. ; Hartnagel, H. L. (1998):
Numerical modeling of quasi-optical frequency multipliers.
In: International Conference on Millimeter and Submillimeter Waves and Applications <4, 1998, S.Diego, California USA>: Proceedings, [Konferenzveröffentlichung]

Arslan, Deniz ; Dehé, A. ; Hartnagel, H. L. (1998):
A new concept of lateral GaAs field emitter for sensor applications.
In: IVMC´98: International Vacuum Microelectronics Conference <11,1998, Asheville, NC>: Proceedings, [Konferenzveröffentlichung]

Arslan, Deniz ; Hofmann, ; Greiner, ; Hartnagel, H. L. (1998):
Fabrication and characterization of a GaAs field emission triode for low voltage operation at atmospheric pressure.
In: IVMC´98: International Vacuum Microelectronics Conference <11, 1998, Asheville, NC>: Proceedings, [Konferenzveröffentlichung]

Brandt, Michael ; Bachmann, ; Vogt, ; Fach, ; Mayer, ; Breuer, ; Hartnagel, (1998):
Highly sensitive AlGaAs-GaAs position sensors for measurement of tire tread deformation.
In: Electronics letters. 34 (1998), 8, S. 760-762, [Artikel]

Brandt, Michael ; Bachmann, ; Vogt, ; Fach, ; Mayer, ; Breuer, ; Hartnagel, (1998):
Highly sensitive AlGaAs/GaAs position sensor for measurement of tire tread deformation.
In: Electronic Letters.34 (1998), H. 8, S. 760-762, [Artikel]

DasGupta, A. ; Arslan, D. ; Sigurdardottir, A. ; Hartnagel, H. L. (1998):
A novel self-consistent simulator for current-density-voltage-characteristics of semiconductor field emitters.
In: Applied physicics letters. 72 (1998), H. 10, S. 1220-1222, [Artikel]

Dehé, Alfons ; Peerlings, ; Pfeiffer, ; Riemenschneider, ; Vogt, ; Streubel, ; Künzel, ; Meißner, ; Hartnagel, (1998):
III-V Compound semiconductor micromachined actuators for long resonator tunable Fabry-Pérot detectors.
In: Sensors and actuators. 68 (1998), S. 365-371, [Artikel]

Grajal, J. ; Krozer, V. ; Maldonado, F. ; Gonzalez, E. ; Lin, C. I. ; Hartnagel, H. L. (1998):
Tripler circuit design with Schottky varactors.
In: International Conference Terahertz Electronics <6,1998, Leeds, UK>: Proceedings. S. 153-156, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Arslan, D. ; Brandt, M. ; Dehé, A. ; Mutamba, K. ; Vogt, (1998):
Compound semiconductor microsensors for applications in mechanical engineering.
In: GAAS´98: European Gallium Arsenide and Related III -V Compounds Application Symposium ; within the European Microwave Week <1998, Amsterdam>: Proceedings. S.485, [Konferenzveröffentlichung]

Hartnagel, Hans L. ; Brandt, ; Dehé, ; Simon, (1998):
Mikro-Sensorik für den Einsatz in Maschinen bis hin zum Satelliten.
In: Thema Forschung. 1998, H. 1, S. 14-21, [Artikel]

Hartnagel, Hans L. ; Mutamba, ; Sigurdardottir, A. (1998):
A basic quantum dot element: proposal of a HBT-dot cell for high-packing density memory circuits.
In: International Workshop on Physics and Modelling of Devices based on Low-Dimensional Structures <2, 1998, Aizu-Wakamatsu, Japan>: Proceedings. S. 18-22, [Konferenzveröffentlichung]

Krozer, Viktor ; Brandt, ; Schüßler, ; Hartnagel, (1998):
Application of transmission line pulses for reliability characterisation of high temperature devices.
In: HiTEC´98: High -Temperature Electronics Conference <1998, Albuquerque>: Proceedings. S. 138-143, [Konferenzveröffentlichung]

Lin, Chih-I. ; Simon, A. ; Rodriguez-Girones, M. ; Hartnagel, H.-L. ; Zimmermann, P. ; Zimmermann, R. ; Henneberger, R. (1998):
Planar Schottky diodes for submillimeter wave applications.
In: International Conference Terahertz Electronics <6, 1998, Leeds, UK>: Proceedings. S. 135-138, [Konferenzveröffentlichung]

Lin, Chih-I. ; Simon, A. ; Zhang, Jian ; Piironen, P. V. ; Möttönen, V. S. ; Hartnagel, H. L. ; Räisänen, A. V. (1998):
Anti-parallel planar Schottky diodes for subharmonically pumped mixer.
In: International Conference on Infrared Millimeter Waves < 23, 1998, Colchester, UK>: Proceedings. S. 90-91, [Konferenzveröffentlichung]

Miranda-Pantoja, J. M. ; Vogt, Alexander ; Schüßler, M. ; Shaalan, M. ; Matulionis, A. ; Sebastian, J. L. ; Hartnagel, H. L. (1998):
Microwave noise measurements on Al 0.3Ga 0.7As/GaAs channels grown by molecular beam epitaxy using As2 and As4.
In: Journal of semiconductor science and technology. 1998, H. 13, S. 833-836, [Artikel]

Mutamba, Kabula ; Sigurdardottir, A. ; Vogt, Alexander ; Hartnagel, H. L. ; Li, E. H. (1998):
A comparative study of uniaxial pressure effects in intraband AlGaAs/GaAs and interband in As/AlSb/GaSb resonant tunneling diodes.
In: Applied physics letters. 72 (1998), H.13, S.1629-1631, [Artikel]

Peerlings, Joachim ; Riemenschneider, R. ; Strassner, M. ; Scheuer, V. ; Naveen Kumar, V. ; Mutamba, K. ; Pfeiffer, J. ; Herbst, S. ; Hartnagel, H. L. (1998):
In GaAs/InP Fabry-Pérot pin receiver for dense wavelength division multiplex systems.
In: ECOC´98: European Conference on Optical Communications <24, 1998, Madrid>: Proceedings, [Konferenzveröffentlichung]

Pfeiffer, Joachim ; Riemenschneider, R. ; Peerlings, J. ; Dehé, A. ; Mutamba, K. ; Meissner, P. ; Hartnagel, H. L. (1998):
InP bulk micromachined tunable Bragg mirrors for optical filter applications in WDM systems.
In: WOCSDICE´98: Workshop on Compound Semiconductor Devices and Integrated Circuits <22,1998, Berlin>: Proceedings. S. 103-104, [Konferenzveröffentlichung]

Riemenschneider, Rolf ; Peerlings, ; Pfeiffer, ; Dehé, ; Vogt, ; Meißner, ; Hartnagel, ; Chitica, (1998):
Mechanical-optical analysis of InP-based Bragg Membranes for selective tunable WDM receivers.
In: SPIE Photonics West´98 <1998, San José, CA>: Proceedings, 3276, [Konferenzveröffentlichung]

Shaalan, Mohamed ; Weinzierl, J. ; Bozzi, M. ; Hartnagel, H. L. (1998):
An approach towards understanding an open-structure frequency-doubler.
In: IEEE Semiconductor Conference <1998, Lisboa>: Proceedings, [Konferenzveröffentlichung]

Sim, St. K. H. ; Li, ; Mutamba, ; Hartnagel, (1998):
Analysis of antimonide-based interdiffusion quantum well.
In: Photonics Taiwan´98 <1998, Taipeh>: Proceedings, [Konferenzveröffentlichung]

Sim, St. K. H. ; Li, ; Sigurdardottir, A. ; Mutamba, ; Hartnagel, H. L. (1998):
Intersubband absorption in a typ-I interdiffused quantum-well infrared photodetector.
In: PHOTONICS´98: International Conference on Fiber Optics and Photonics <1998, Delhi>: Proceedings, [Konferenzveröffentlichung]

Sim, St. K. H. ; Mutamba, ; Sigurdardottir, A. ; Hartnagel, H. L. (1998):
Medium wavelength infrared detector with diffused Al x In 1-x Sb/InSb quantum-wells structure.
In: HKEDM´98: Hong Kong Electron. Dev. Meeting <1998, Hong Kong>: Proceedings, [Konferenzveröffentlichung]

Simon, Ansgar ; Lin, ; Rodriguez-Gironés, ; Hartnagel, (1998):
Recent developments on Schottky diodes for THz applications.
In: International Conference on Infrared Millimeter Waves <23, 1998, Colchester>: Proceedings. S. 83-85, [Konferenzveröffentlichung]

Simon, Ansgar ; Lin, Chih-I. ; Rodriguez-Girones, M. ; Hartnagel, H.-L. ; Zimmermann, P. ; Zimmermann, R. ; Henneberger, R. (1998):
High efficiency frequency multipliers using substrateless Schottky diodes.
In: International Conference Terahertz Electronics <6, 1998, Leeds, UK>: Proceedings. S. 72-73, [Konferenzveröffentlichung]

Vogt, Alexander ; Simon, A. ; Hartnagel, H. L. ; Schikora, J. ; Buschmann, V. ; Rodewald, M. ; Fuess, H. ; Fascko, S. ; Koerdt, C. ; Kurz, H. (1998):
Ohmic contact formation mechanics of the PdGeAu system on n-type GaSb grown by molecular beam epitaxy.
In: Journal of Applied Physics, American Institute of Physics, S. 7715-7719, 83, (12), ISSN 0021-8979,
[Artikel]

Vogt, Alexander ; Simon, A. ; Hartnagel, H. L. ; Schikora, J. ; Buschmann, V. ; Rodewald, M. ; Fuess, H. ; Fascko, S. ; Kurz, H. (1998):
Ohmsche Kontakte des Systems Pd/Ge/Au auf n-GaSb.
In: Jahrestagung Deutsche Gesellschaft für Kristallographie <6, 1998, Karlsruhe>: Tagungsbd., [Konferenzveröffentlichung]

Vogt, Alexander ; Simon, A. ; Weber, ; Hartnagel, H. L. ; Schikora, J. ; Buschmann, V. ; Fuess, H. (1998):
Non-annealed Ohmic contacts to p-GaSb grown by molecular beam epitaxy.
In: EXMATEC´98: International Workshop on Expert Evaluation and Control Compound Semiconductor Materials and Technologies <1998, Cardiff>: Proceedings, [Konferenzveröffentlichung]

Dehe, A. ; Klingbeil, Harald ; Weil, C. ; Hartnagel, H. L. (1998):
Membrane-Supported Coplanar Waveguides for MMIC and Sensor Application.
In: IEEE Microwave and Guided Wave Letters, S. 185-187, 8, (5), [Artikel]

1997

Lin, Chih-I. ; Simon, A. ; Rodriguez-Girones, M. ; Hartnagel, H. L. ; Zimmermann, P. ; Zimmermann, R. (1997):
Substrateless Schottky diodes for THz applications.
In: International Symposium on Space Terahertz Technology <8, 1997, Harvard Univ., Cambridge, Mass.>: Proceedings, [Konferenzveröffentlichung]

Behner, Ulrich ; Haug, ; Schütz, ; Hartnagel, (1997):
Characterization of anisotropically conductive adhesive interconnections by 1/f noise measurements.
In: IEEE International Symposium on Polymeric Electronics Packaging <1997, Norrköping, Sweden>: Proceedings, [Konferenzveröffentlichung]

Behner, Ulrich ; Haug, ; Schütz, ; Hartnagel, (1997):
Untersuchung von anisotrop elektrisch leitfähigen Klebstoffen mit 1/f-Rauschmessungen.
In: International Society for Hybrid Microelectronics: German ISHM Conference <1997, München>: Proceedings, [Konferenzveröffentlichung]

Brandt, Michael ; Schüßler, ; Krozer, ; Grajal, ; Hartnagel, (1997):
Transmission line pulse based reliability investigations of HBTs.
In: European Gallium Arsenide and Related III-V Compounds Applications Symposium <5, 1997, Bologna, Italy>: Proceedings. S. 105-108, [Konferenzveröffentlichung]

Brandt, Michael ; Schüßler, ; Lin, ; Simon, ; Hartnagel, (1997):
Transmission line pulse based reliability investigations of THz Schottky diodes.
In: ESA Electronic Components Conference <3, 1997, Noordwijk, NL>: Proceedings. S. 29-34, [Konferenzveröffentlichung]

Brandt, Michael ; Schüßler, ; Parmeggiani, ; Lin, ; Simon, ; Hartnagel, (1997):
Thermal simulation and characterisation of the reliability of terahertz Schottky diodes.
In: European Symposium of Electron Devices, Failure Physics and Analysis <8, 1997, Arcachon, France>: Proceedings. S. 1663-1666, [Konferenzveröffentlichung]

Dehé, Alfons ; Pavlidis, ; Hong, ; Hartnagel, (1997):
InGaAs/InP thermoelectric infrared sensor utilizing surface bulk micromachining technology.
In: IEEE Transactions on electron devices. 44 (1997), 6, S. 1193-1199, [Artikel]

Gleeson, P. ; Pike, ; Maaskant, ; Kelly, ; Simon, ; Lin, ; Hartnagel, (1997):
GaAs Schottky diodes for THz applications.
In: International Conference on Infrared and MM Waves <22, 1997, Wintergreen, Virginia>: Proceedings, [Konferenzveröffentlichung]

Goswami, S. N. N. ; Lal, ; Vogt, ; Hartnagel, (1997):
Determination of crystalline perfection and lattice-mismatch between gallium antimonide epitaxial films and gallium arsenide substrates.
In: International Workshop on Physics of Semiconductor Devices <1997, New Delhi>: Proceedings, [Konferenzveröffentlichung]

Gottwald, P. ; Kräutle, ; Szentpáli, ; Kincses, ; Hartnagel, (1997):
Damage characterization of InP after reactive ion etching using the low-frequency noise measurement technique.
In: Solid-state electronics. 41 (1997), No. 4, S. 539-545, [Artikel]

Grajal, J. ; Krozer, V. ; Gonzalez, P. ; Gismero, J. ; Maldonado, F. ; Lin, C. I. ; Simon, A. ; Hartnagel, H. L. (1997):
Characterization of Schottky diode performance by numerical simulation coupled with harmonic balance.
In: European Microwave Conference <27, 1997, Jerusalem>: Proceedings, [Konferenzveröffentlichung]

Grajal, J. ; Krozer, V. ; Schüßler, M. ; Brandt, M. ; Hartnagel, Hans L. (1997):
Application of semiconductor interface modelling to reliability characterisation.
In: WOCSDICE'97 <1997, Scheveningen, NL>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1997):
III-V-compounds for high temperature operation.
In: Materials science and engineering. B 46 (1997), S. 47-51, [Artikel]

Hartnagel, Hans L. (1997):
New devices for millimeter-wave applications.
In: Annales des télécommunications. 52 (1997), No. 3-4, [Artikel]

Hartnagel, Hans L. (1997):
Ultra-small quantum devices for memory and logic.
In: International Solid State Circuits Conference <44, 1997, San Francisco>: Session 7; Digest, S. 126-127, [Konferenzveröffentlichung]

Henkel, Achim ; Delage, ; di Forte-Poisson, ; Blanck, ; Hartnagel, (1997):
Boron implantation into GaAs/Ga0,5In0,5P heterostructures.
In: Japan. Journal of applied physics. 36 (1997), S. 175-180, [Artikel]

Henkel, Achim ; Delage, ; di Forte-Poisson, ; Chartier, ; Blanck, ; Hartnagel, (1997):
Collector-up InGaP/GaAs-double heterojunction bipolar transistors with high fmax.
In: Electronics letters. 33 (1997), No. 7, S. 634-636, [Artikel]

Huber, K. ; Lin, ; Simon, ; Rodriguez-Girones, ; Hartnagel, ; Zimmermann, ; Zimmermann, (1997):
2.5 THz corner cube mixer with substrateless Schottky diodes.
In: International Workshop on Terahertz Electronics <5, 1997, Grenoble>: Proceedings, [Konferenzveröffentlichung]

Klingbeil, Harald ; Beilenhoff, ; Hartnagel, (1997):
Analysis and modeling of conductor loss effects in CPW air bridges for MMIC applications.
In: MIOP <9, 1997, Sindelfingen>: Proceedings, [Konferenzveröffentlichung]

Klingbeil, Harald ; Beilenhoff, ; Hartnagel, (1997):
Rigorous numerical simulation and modeling of coplanar discontinuities.
In: International IEEE Workshop on Experimentally based FET Device Modelling and Related Nonlinear Circuit Design 1997, Kassel>: Tagungsbd, [Konferenzveröffentlichung]

Liberis, J. ; Matulionis, ; Sakalas, ; Saltis, ; Dozsa, ; Szentpali, ; van Tuyen, ; Hartnagel, ; Mutamba, (1997):
Microwave noise in unipolar diodes with nanometric barriers.
In: International Conference on Noise in Physical Systems and 1/f Fluctuations <14, 1997, Leuven, Belgium>: Proceedings, [Konferenzveröffentlichung]

Lin, Chih-I. ; Krozer, V. ; Grajal, ; Simon, A. ; Hartnagel, H. L. (1997):
Schottky varactor diode optimation for frequency multipliers.
In: International Workshop on Terahertz Electronics <5, 1997, Grenoble>: Proceedings, [Konferenzveröffentlichung]

Mees, J. ; Ekstrom, H. ; Kollberg, E. L. ; Eleftheriades, G. V. ; Mosig, J. R. ; Räisänen, A. V. ; Piironen, P. ; Hartnagel, H. L. ; Simon, A. (1997):
Open structure integrated Schottky receiver for space applications.
Noordwijk, In: ESTEC Antenna Workshop on Millimeter Wave Antenna Technology and Antenna Measurements <20, 1997, Noordwijk, NL>: Proceedings, [Konferenzveröffentlichung]

Miao, Jianmin ; Tiginyanu, ; Hartnagel, (1997):
The characteristics of high-resistance layers produced in n-GaAs using MeV-nitrogen implantation for three-dimensional structuring.
In: Applied physics letters. 70 (1997), No. 7, [Artikel]

Mutamba, Kabula ; Sigurdardottir, A. ; Hartnagel, H. L. (1997):
Concept of nanometric high density charge coupled devices.
In: Workshop on Innovative Circuits and Systems for Nano Electronics <2, 1997, Delft, NL>: Proceedings, [Konferenzveröffentlichung]

Mutamba, Kabula ; Sigurdardottir, A. ; Vogt, Alexander ; Hartnagel, H. L. (1997):
Stress effects in AlGaAs/GaAs and InAs/AlSb/GaSb RTDs for sensing applications.
In: Phantoms Strategic Domain Meeting on Physics and Technology of Mesoscopic Systems <1997, Aachen, Germany>: Abstracts, [Konferenzveröffentlichung]

Peerlings, Joachim ; Dehé, A. ; Tilsch, M. ; Hebeler, C. ; Langenhan, F. ; Meißner, P. ; Hartnagel, H. L. (1997):
GaAs/AlAs micromachined tunable Fabry-Pérot filters for dense wavelength division multiplex systems.
In: International Conference on Integrated Optics and Optical Fibre Communications <11, 1997, Edinburgh, UK>: Proceedings, [Konferenzveröffentlichung]

Peerlings, Joachim ; Dehé, A. ; Vogt, Alexander ; Tilsch, M. ; Hebeler, C. ; Langenhan, F. ; Meißner, P. ; Hartnagel, H. L. (1997):
GaAs/AlAs micromachined tunable Fabry-Pérot filters with long resonant cavity.
In: Eurosensors <11, 1997, Warszawa, Poland>: Proceedings, [Konferenzveröffentlichung]

Peerlings, Joachim ; Dehé, A. ; Vogt, Alexander ; Tilsch, M. ; Hebeler, C. ; Langenhan, F. ; Meißner, P. ; Hartnagel, H. L. (1997):
Long resonator micromachined tunable GaAs/AlAs Fabry-Pérot filter.
In: IEEE Photonics technology letters. 9 (1997), 9, S. 1235-1237, [Artikel]

Schüßler, Martin ; Statzner, ; Granero, ; Hartnagel, Hans L. (1997):
A new self aligned technique for HBTs using electrolytical deposition of base metal.
In: European Gallium Arsenide and Related III-V Compounds Applications Symposium <5, 1997, Bologna, Italy>: Proceedings, [Konferenzveröffentlichung]

Shaalan, Mohamed ; Bozzi, M. ; Arcioni, P. ; Perregrini, L. ; Weinzierl, J. ; Conciauro, G. ; Hartnagel, H. L. (1997):
Design of planar antenna array for quasi-optical frequency tripler.
In: International Workshop on Terahertz Electronics <5, 1997, Grenoble, France>: Proceedings, [Konferenzveröffentlichung]

Shaalan, Mohamed ; Bozzi, M. ; Beilenhoff, K. ; Conciauro, G. ; Hartnagel, H. L. ; Weinzierl, J. ; Rehm, G. ; Steup, D. ; Brand, H. (1997):
An antenna array for quasi-optical frequency multiplier applications.
In: ESTEC Antenna Workshop on Millimetre Wave Antenna Technology and Antenna Measurements <20, 1997, Noordwijk, NL>: Proceedings, [Konferenzveröffentlichung]

Shaalan, Mohamed ; Bozzi, M. ; Weinzierl, J. ; Beilenhoff, K. ; Conciauro, G. ; Brand, H. ; Hartnagel, H. L. (1997):
A 300 GHz quasioptical Schottky frequency doubler.
In: Journal of infrared and millimeter waves. 18 (1997), No. 12, [Artikel]

Shaalan, Mohamed ; Bozzi, M. ; Weinzierl, J. ; Miranda, J. ; Vogt, Alexander ; Weber, J. ; Hartnagel, H. L. ; Conciauro, G. (1997):
First design of a 430 GHz quasioptical HBV tripler.
In: International Workshop on Terahertz Electronics <5, 1997, Grenoble, France>: Proceedings, [Konferenzveröffentlichung]

Sigurdardottir, Anna ; Mutamba, K. ; Vogt, Alexander ; Hartnagel, H. L. (1997):
Investigation on the tunneling effect in stressed InAs/AlSb/GaSb-resonant-tunneling diodes.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits <21, 1997, Scheveningen, NL>: Proceedings, [Konferenzveröffentlichung]

Simon, Ansgar ; Hartnagel, (1997):
Schottky diode developments for submillimeter wave applications.
In: IEEE-MTT/AP German newsletter. 1 (1997), No. 9, [Artikel]

Simon, Ansgar ; Lin, ; Hartnagel, ; Zimmermann, ; Zimmermann, (1997):
Fabrication and optimization of planar Schottky diodes.
In: International Symposium on Space Terahertz Technology <8, 1997, Harvard Univ., Cambridge, Mass.>: Proceedings, [Konferenzveröffentlichung]

Simon, Ansgar ; Lin, ; Rodriguez-Girones, ; Hartnagel, ; Zimmermann, ; Zimmermann, (1997):
Improvement of varactor diodes for submillimeterwave sources.
In: International Workshop on Terahertz Electronics <5, 1997, Grenoble>: Proceedings, [Konferenzveröffentlichung]

Tiginyanu, I. ; Irmer, G. ; Monecke, J. ; Hartnagel, H. L. (1997):
MicroRaman scattering study of surface-related phonon modes in porous GaP.
In: Physical review. B 55 (1997), S. 6739-6742, [Artikel]

Tiginyanu, I. ; Irmer, G. ; Monecke, J. ; Vogt, Alexander ; Hartnagel, H. L. (1997):
Porosity-induced modification of the phonon spectrum of n-GaAs.
In: Semiconductor science technology. 12 (1997), S. 491-493, [Artikel]

Tiginyanu, I. ; Pavlidis, D. ; Cao, J. ; Eisenbach, A. ; Ichizli, Victoria M. ; Hartnagel, Hans L. ; Anedda, A. ; Corpino, R. (1997):
Time-resolved photoluminescence characterisation of GaN layers grown by metalorganic chemical vapor deposition.
In: Conference on Defect Recognition and Imaging Processing <7, 1997>: Proceedings, [Konferenzveröffentlichung]

Vogt, Alexander ; Brandt, ; Sigurdardottir, A. ; Schüssler, ; Pena, ; Simon, ; Hartnagel, H. L. ; Rodewald, ; Roesner, (1997):
Characterisation of degradation mechanisms in resonant tunnelling diodes.
In: Microelectronics and reliability. 37 (1997), S. 1691-1694, [Artikel]

Vogt, Alexander ; Brandt, ; Sigurdardottir, A. ; Schüßler, ; Pena, ; Simon, ; Hartnagel, H. L. ; Rodewald, ; Roesner, (1997):
Characterisation of degradation mechanisms in resonant tunneling diodes.
In: European Symposium of Electron Devices, Failure Physics and Analysis <8, 1997, Arcachon, France>: Proceedings. S. 1691-1694, [Konferenzveröffentlichung]

Vogt, Alexander ; Simon, ; Hartnagel, ; Rodewald, ; Fuess, ; Ressel, ; Vogel, ; Würfl, (1997):
Pd-based Ohmic contacts to GaSb.
In: WOCSDICE'97 <1997, Scheveningen, NL>: Proceedings, [Konferenzveröffentlichung]

1996

Aller, Ingo ; Hartnagel, H. L. (1996):
Selective area growth of InP by plasma assisted solid-source epitaxy.
In: Journal of electronic materials. 25 (1996), S. 421-424, [Artikel]

Aller, Ingo ; Schweeger, ; Lang, ; Hartnagel, H. L. ; Dolt, ; Hohenberg, Günter (1996):
GaAs piezotransistor for dynamic pressure measurements at high temperatures.
In: Applied physics letters. 69 (1996), S. 403-405, [Artikel]

Beilenhoff, Klaus ; Klingbeil, K. ; Hartnagel, H. L. (1996):
Parasitic effects of CPW discontinuities for MMIC applications.
In: European Microwave Conference <26, 1996, Praha>: Proceedings, [Konferenzveröffentlichung]

Bellone, S. ; Rinaldi, ; Vitale, ; Cocorullo, ; Schweeger, ; Hartnagel, (1996):
A two-dimensional analytical model of homojunction GaAs BMFET structures.
In: Solid-state electronics. 39 (1996), S. 1221-1229, [Artikel]

Berg, M. ; Hackbarth, ; Maile, ; Dickmann, ; Gühl, ; Adelseck, ; Hartnagel, (1996):
W-band MMIC amplifiers based on quarter micron gate-length InP HEMTs and coplanar waveguides.
In: International Conference on Indium Phosphide and Related Materials <8, 1996, Schwäbisch Gmünd>: Proceedings, [Konferenzveröffentlichung]

Berg, M. ; Hackbarth, ; Maile, ; Koßlowski, ; Dickmann, ; Köther, ; Hopf, ; Hartnagel, (1996):
Active circulator MMIC in GPW technology using quarter micron InAlAs/InGaAs/InP HFETs.
In: International Conference on Indium Phosphide and Related Materials <8, 1996, Schwäbisch Gmünd>: Proceedings, [Konferenzveröffentlichung]

Brandt, Michael ; Krozer, ; Schüßler, ; Bock, ; Hartnagel, (1996):
Characterisation of reliability of compound semiconductor devices using electrical pulses.
In: Microelectronics and reliability. 36 (1996), S. 1891-1894, [Artikel]

Brandt, Michael ; Schüßler, ; Hartnagel, (1996):
Characterisation of the reliability of planar Schottky diodes for millimetre and submillimetre wave applications.
In: European Space Research and Technology Centre: ESA-ESTEC <1996, Noordwijk, NL>: Proceedings, [Konferenzveröffentlichung]

Böttner, Th ; Kräutle, ; Kuphal, ; Miethe, ; Hartnagel, (1996):
Surface- and sidewall-damage of InP-based optoelectronic devices during reactive ion etching using CH4/H2.
In: International Conference on Indium Phosphide and Related Materials <8, 1996, Schwäbisch Gmünd>: Proceedings, [Konferenzveröffentlichung]

Dehé, Alfons ; Hartnagel, (1996):
Free-standing AlGaAs thermopiles for improved infrared sensor design.
In: IEEE transactions of electron devices. 43 (1996), No. 8, S. 1193-1199, [Artikel]

Dehé, Alfons ; Hartnagel, ; Pavlidis, ; Hong, ; Kuphal, (1996):
Properties of InGaAs/InP thermoelectric and surface bulk micromachined infrared sensors.
In: Applied physics letters. 69 (1996), S. 3039-3041, [Artikel]

Dehé, Alfons ; Klingbeil, ; Krozer, ; Fricke, ; Beilenhoff, ; Hartnagel, (1996):
GaAs integrated thermoelectric microwave power sensor.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits <20, 1996, Vilnius, Lithuania>: Proceedings. S. 126-127, [Konferenzveröffentlichung]

Dehé, Alfons ; Klingbeil, ; Krozer, ; Fricke, ; Beilenhoff, ; Hartnagel, (1996):
GaAs monolithic integrated microwave power sensor in coplanar waveguide technology.
In: IEEE MTT-S International Microwave Symposium <1996>: Digest. S. 161-164, [Konferenzveröffentlichung]

Dehé, Alfons ; Krozer, ; Chen, ; Hartnagel, (1996):
High-sensitivity microwave power sensor for GaAs-MMIC implementation.
In: Electronic letters. 32 (1996), No. 23, S. 2149-2150, [Artikel]

Dumka, Deep C. ; Riemenschneider, ; Miao, ; Hartnagel, ; Singh, (1996):
Electrochemically fabricated high-barrier Schottky contacts on n-InP and their application for metal-semiconductor-metal photodetectors.
In: Journal of the Electrochemical Society. 143 (1996), S. 1945-1948, [Artikel]

Hartnagel, Hans L. (1996):
Are new device and material concepts needed in the future?
In: Workshop on Post-Binary Ultra Large Scale Integration <1996, Santiago de Compostela, Spain>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1996):
III-V compounds for high-temperature operations.
Amsterdam, Elsevier, In: Proceedings of Symposim G on Nonlinear Optical and Optoelectronic Organic Materials of the 1996 E-MRS Spring Conference: Strasbourg, June 1996, 83,3, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1996):
Microwave opportunities for city communications and for motor-car traffic handling.
In: Nato Advanced Research Workshop on Scientific and Technological Achievements Related to Development of European Cities <1996, Kishinev, Moldawien>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1996):
Nanometric structures in future quantum electronics.
In: Review of radio science 1993-1996. Hrsg.: W.R. Stone. S. 295-303, Union Radio Scientifique Internationale, [Artikel]

Hartnagel, Hans L. (1996):
(Rez.) Ploog, K.H.: III-V quantum system research.
In: Electronics & communication: engineering journal. 8 (1996), S. 277, [Artikel]

Horn, Joachim ; Pavlidis, ; Park, ; Hartnagel, (1996):
Scanning tunneling microscopy characterization of MOCVD grown GaN.
In: EXMATEC: International Workshop on Expert Evaluation and Control of Compound Semiconductor Materials and Technologies <3, 1996, Breisgau>: Proceedings, [Konferenzveröffentlichung]

Horn, Joachim ; Vogt, ; Aller, ; Hartnagel, (1996):
Semiconductor heterostructure interface characterization using scanning tunneling microscope excited time-resolved luminescence.
In: Journal of vacuum science and technology. B 14 (1996), S. 820-823, [Artikel]

Iida, T. ; Makita, ; Shima, ; Kimura, ; Horn, ; Hartnagel, ; Uekusa, (1996):
C+-energy-dependent residual ion damage in GaAs: C grown by the low-energy ion-beam doping method.
In: Journal of applied physics. 80 (1996), 7, [Artikel]

Klingbeil, Harald ; Beilenhoff, ; Hartnagel, (1996):
Finite-difference analysis structures consisting of roundly and rectangular shaped domains.
In: IEEE microwave and guided letters. 6 (1996), No. 8, S. 295-297, [Artikel]

Lin, Chih-I. ; Simon, A. ; Hartnagel, H. L. (1996):
Fabrication of substrateless Whiskercontacted Schottky diodes for THz applications.
In: International Workshop on Terahertz Electronics <4, 1996, Erlangen>: Proceedings, [Konferenzveröffentlichung]

Micheel, Lutz ; Hartnagel, H. L. (1996):
Interband RTDs with nanoelectronic HBT-LED structures for multiple-valued computation.
In: IEEE Multivalued Conference <1996, Santiago die Compostela>: Proceedings, [Konferenzveröffentlichung]

Mutamba, Kabula ; Flath, ; Sigurdardottir, A. ; Vogt, Alexander ; Hartnagel, H. L. (1996):
Pressure effects in AlGaAs/GaAs resonant tunnelling diodes for applications in semiconductor sensors.
In: Lithunian journal of physics. 36 (1996), No. 6, S. 563-565, [Artikel]

Mutamba, Kabula ; Flath, ; Vogt, Alexander ; Sigurdardottir, A. ; Dehé, A. ; Hartnagel, H. L. (1996):
Pressure sensors based on stress dependence of AlGaAs/GaAs RTD characteristics.
In: Workshop on Heterostructures Technology <1996, Lille>: Proceedings, [Konferenzveröffentlichung]

Mutamba, Kabula ; Sigurdardottir, A. ; Miao, J. ; Dehé, A. ; Aller, ; Hartnagel, H. L. (1996):
Uniaxial stress dependence of AlGaAs/GaAs RTD characteristics for sensor applications.
In: Micromechanics Europe Conference <1996, Barcelona, Spain>: Proceedings. S. 85, [Konferenzveröffentlichung]

Riipulk, J. ; Hinrikus, ; Beilenhoff, ; Hartnagel, (1996):
Simulation of breast tissues temperature measurement using Dicke radiometer by FDTD method.
In: Nordic-Baltic Conference on Biomedical Engineering <10, 1996, Tampere, Finland>: Proceedings, [Konferenzveröffentlichung]

Riipulk, J. ; Hinrikus, ; Beilenhoff, ; Hartnagel, (1996):
Simulation of microwave radiometric temperature measurement inside biological tissues using FDTD method.
In: Conference on Bioelectric Measurement <1996, Nancy, France>: Proceedings, [Konferenzveröffentlichung]

Schüßler, Martin ; Krozer, ; Bock, ; Brandt, ; Vecchi, ; Losi, ; Hartnagel, Hans L. (1996):
Pulsed stress reliability investigations of Schottky diodes and HBTs.
In: Microelectronics and reliability. 36 (1996), S. 1907-1910, [Artikel]

Schüßler, Martin ; Statzner, ; Lin, ; Krozer, ; Horn, ; Hartnagel, Hans L. (1996):
Electrochemical deposition of Pd, Ti, and Ge for applications in GaAs technology.
In: Journal of the Electrochemical Society. 143 (1996), No. 4, S. 73-75, [Artikel]

Steinhagen, Frank ; Hartnagel, ; Burkhard, (1996):
Up to 20GHz high-frequency small-signal AM characterisation of laser diodes.
In: COST <240>: European Cooperation in the Field of Scientific and Technical Research <240>: Workshop 1996 Budapest; Proceedings, [Konferenzveröffentlichung]

Steinhagen, Frank ; Hillmer, ; Lösch, ; Schlapp, ; Göbel, ; Kuphal, ; Hartnagel, ; Burkhard, (1996):
High-speed complex-coupled strain-compensated AlGaInAs/InP 1.5µm DFB laser diodes.
In: International Conference on Indium Phosphide and Related Materials <8, 1996, Schwäbisch Gmünd>: Proceedings, [Konferenzveröffentlichung]

Tiginyanu, I. ; Ichizli, Victoria M. ; Hartnagel, Hans L. (1996):
Surface vibrational modes in nanoporous III-V compounds.
In: International Conference on Vibrations at Surfaces <8, 1996, Birmingham>: Proceedings, [Konferenzveröffentlichung]

Tiginyanu, I. ; Miao, ; Hartnagel, Hans L. ; Rück, ; Tinschert, ; Ursaki, ; Ichizli, Victoria M. (1996):
Raman and electrical characterisation of n-InP implanted by 630-keV nitrogen.
In: International Conference on Indium Phosphide and Related Materials <8, 1996, Schwäbisch Gmünd>: Proceedings, [Konferenzveröffentlichung]

Vogt, Alexander ; Brandt, ; Pena, ; Aller, ; Hartnagel, (1996):
Wachstum und Zuverlässigkeit von resonanten Tunneldioden.
In: Molecular Beam Epitaxy Workshop <1996, Frankfurt/Oder>: Proceedings, [Konferenzveröffentlichung]

Vogt, Alexander ; Hartnagel, ; Miehe, ; Fuess, ; Schmitz, ; Hartnagel, ; Miehe, ; Fuess, ; Schmitz, (1996):
Electrical and microstructure analysis of ohmic contacts to p- and n-type GaSb, grown by molecular beam epitaxy.
In: Journal of vacuum science and technology. B 14 (1996), S. 3514-3519, [Artikel]

Wischmeyer, Frank ; Horn, ; Niemann, E. ; Hartnagel, H. L. (1996):
Rastertunnelmikroskopie als Methode zur Untersuchung des Interfaces zwischen CVD-gewachsenem 3C-SiC und Silizium.
In: Deutsche Physikalische Gesellschaft: Frühjahrstagung <1996, Regensburg>; Tagungsbd, [Konferenzveröffentlichung]

1995

Aller, Ingo ; Hartnagel, H. L. (1995):
Selective growth of InP by plasma assisted solid-source epitaxy.
In: International Conference on Indium Phosphide and Related Materials <7, 1995, Sapporo, Japan>: Proceedings. S. 325-328, [Konferenzveröffentlichung]

Beilenhoff, Klaus ; Heinrich, ; Hartnagel, H. L. (1995):
Analysis of MIM series capacitances for coplanar MMICs.
In: Microwaves and optoelectronics: MIOP '95 <1995, Sindelfingen>: Digest. S. 124-128, [Konferenzveröffentlichung]

Bock, K. ; Hartnagel, (1995):
Travelling wave field emission devices for THz operation.
In: International Workshop on Terahertz Electronics <3, 1995, Zermatt, Schweiz>: Proceedings, [Konferenzveröffentlichung]

Borgarino, M. ; Menozzi, ; Fantini, ; Schüssler, ; Hartnagel, (1995):
High base current ideality factors due to trap-assisted band-to-band tunneling in AlGaAs/GaAs HBTs.
In: Alta frequenza. 7 (1995), No. 5, [Artikel]

Chattopadhyay, S. N. ; Aller, ; Hartnagel, (1995):
Detailed transport modelling of experimental behaviour of lightly plasma damaged epitaxial InP.
In: International journal of electronics. 79 (1995), Nr. 5, S. 561-575, [Artikel]

Dehé, Alfons ; Fricke, ; Hartnagel, (1995):
Infrared thermopile sensor based on AlGaAs/GaAs micromachining.
In: Sensors and actuators. A47 (1995), S. 432-436, [Artikel]

Dehé, Alfons ; Fricke, ; Mutamba, ; Hartnagel, (1995):
Piezoresistive GaAs differential pressure sensor with AlGaAs membrane technology.
In: Journal of micromechanics and microengineering. 5 (1995), S. 1-4, [Artikel]

Dehé, Alfons ; Fricke, ; Mutamba, ; Hartnagel, (1995):
A piezoresistive GaAs pressure sensor with GaAs/AlGaAs membrane technology.
In: Journal of micromechanics and microengineering. 5 (1995), S. 139-142, [Artikel]

Dehé, Alfons ; Hartnagel, (1995):
Free-standing Al 0.30Ga 0.70As thermopile infrared sensor.
Piscataway, USA, IEEE, In: International Conference on Solid-State Sensors and Actuators: Transducers '95 <8,1995, Stockholm, Schweden>: Digest of techn. papers, [Konferenzveröffentlichung]

Dumka, D. C. ; Riemenschneider, ; Hartnagel, (1995):
High-barrier Schottky contacts on N-InP using damage-free electrochemical metallization.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits: WOCSDICE <19, 1995, Stockholm, Schweden>: Abstracts, [Konferenzveröffentlichung]

Fricke, Klaus ; Krozer, ; Hartnagel, (1995):
III-V semiconductor properties for high temperature electronics.
In: Materials science and engineering. B 29 (1995), S. 47-53, [Artikel]

Fricke, Klaus ; Krozer, ; Hartnagel, (1995):
Theromdynamics of microwave devices.
In: Handbook of microwave technology. Hrsg.: T. Koryu Ishii. Vol. 2. Kap. 36, Orlando, Academic Press 1995, [Buchkapitel]

Gottwald, P. ; Riemenschneider, ; Szentpali, ; Hartnagel, ; Kincses, ; Ruszinko, (1995):
Comparison of photo- and plasma-assisted passivating process effects on GaAs devices by means of low-frequency noise measurements.
In: Solid state electronics. 38 (1995), Nr. 2, S. 413-417, [Artikel]

Grajal, J. ; Krozer, V. ; Hartnagel, H. L. ; Gismero, J. (1995):
Simulation of the influence of interface states on HBTs.
In: Workshop on Compound Semiconductor Devices and Integrated Circuits: WOCSDICE 95 <19, 1995, Stockholm, Schweden>: Abstracts, [Konferenzveröffentlichung]

Grüb, Andreas ; Lin, ; Hartnagel, (1995):
Electrolytic deposition techniques for the fabrication of submicron anodes.
In: International Symposium on Space Terahertz Technology <6, 1995, Pasadena, USA>: Proceedings, [Konferenzveröffentlichung]

Grüb, Andreas ; Simon, ; Krozer, ; Lin, ; Shaalan, ; Beilenhoff, ; Sigurdardottir, A. ; Hartnagel, H. L. (1995):
Terahertz research at TH Darmstadt.
In: International Workshop on Terahertz Electronics <3, 1995, Zermatt, Schweiz>: Proceedings, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1995):
Engineering at German universities.
In: Engineering science and education journal. 4 (1995), Nr. 1, S. 43-47, [Artikel]

Hartnagel, Hans L. (1995):
Heterostructure transistors for MMIC applications: HEMTs and HBTs.
In: Microwaves and optoelectronics: MIOP '95 <1995, Sindelfingen>: Digest, [Konferenzveröffentlichung]

Hartnagel, Hans L. (1995):
Temperature independent HBT oscillator design.
In: Symposium of the Microwave Theory and Techniques Society <1995, Orlando, USA>: Conference proceedings, [Konferenzveröffentlichung]

Hinrikus, H. ; Krasavin, ; Beilenhoff, ; Hartnagel, (1995):
Calculation of microwave radiometric signal in multilayered biological tissue.
In: International Conference of the IEEE Engineering in Medicine and Biological Society <1995, Montreal, Kanada>: Digest. S. 1583-1584, [Konferenzveröffentlichung]

Hinrikus, H. ; Krasavin, ; Beilenhoff, ; Hartnagel, (1995):
Microwave radiometric input transfer function in multilayered biological tissue.
In: Conference of the International Federation for Medical and Biological Engineering: MEDICON 95 <1995, Israel>: Conference abstracts. S. 90, [Konferenzveröffentlichung]

Hjort, K. ; Schweeger, ; Dehé, ; Fricke, ; Hartnagel, (1995):
Thickness-field excited thickness-shear resonators in (110) GaAs.
In: Applied physics letters. 66 (1995), No. 3, S. 326-328, [Artikel]

Horn, Joachim ; Marx, ; Weiss, ; Hartnagel, ; Stehle, ; Bischoff, ; Pagnia, (1995):
High resolution surface characterization using STM light emission techniques.
In: Passivation of metals and semiconductors. Hrsg.: K.E. Heusler. S. 145-154, Aedermannsdorf, Trans Tech Publ, [Buchkapitel]

Klingbeil, Harald ; Beilenhoff, ; Hartnagel, (1995):
Analysis and modelling of CPW right angle bends.
In: Microwaves and optoelectronics: MIOP '95 <1995, Sindelfingen>: Digest. S. 119-123, [Konferenzveröffentlichung]

Krozer, Viktor ; Schüßler, ; Fricke, ; Lee, ; Hartnagel, (1995):
High temperature microwave modeling and circuit design with MESFET's and HBT's.
In: International Symposium on Signals, Systems and Electronics: ISSE '95 <1995, San Francisco, USA>: Proceedings, [Konferenzveröffentlichung]

Krozer, Viktor ; Würfl, ; Fricke, ; Schüßler, ; Lee, ; Hartnagel, (1995):
High temperature electronics with III-V compound semiconductors.
In: HITEN (High temperature electronics network) - news. 1995, Nr. 9, [Artikel]

Miao, Jianmin ; Hartnagel, ; Rück, ; Fricke, (1995):
The use of ion implantation for micromachining of GaAs for sensor applications.
In: Sensors and actuators A 46-47, Nr. 1-3, S. 30-34, [Artikel]

Miao, Jianmin ; Hartnagel, ; Weiss, ; Wilson, (1995):
Fabrication of free-standing membranes in n-GaAs using MeV nitrogen implantation for sensors.
In: Fall meeting of Materials Research Society <1995, Boston, USA>: Proceedings, [Konferenzveröffentlichung]

Miao, Jianmin ; Hartnagel, ; Weiss, ; Wilson, (1995):
Improved free standing membranes in GaAs for sensor applications.
In: Electronics letters. 31 (1995), Nr. 13, S. 1047-1049, [Artikel]

Miao, Jianmin ; Hjort, ; Hartnagel, ; Schweitz, ; Rück, ; Tinschert, (1995):
Resonant sensors on thin semi-insulating GaAs membranes.
Piscataway, USA, IEEE, In: International Conference on Solid-State Sensors and Actuators: Transducers '95 <8,1995, Stockholm, Schweden>: Digest of techn. papers. S. 406-407, [Konferenzveröffentlichung]

Miao, Jianmin ; Rück, ; Tinschert, ; Hartnagel, (1995):
Herstellung der mikromechanischen Strukturen auf GaAs durch Ionenimplantation für Sensoranwendungen.
In: Industrie und Forschung: Seminar der Gesellschaft für Schwerionenforschung, 1995, Darmstadt, [Konferenzveröffentlichung]

Pirling, Thilo ; Fricke, ; Schüßler, ; Lee, ; Fuess, H. ; Hartnagel, H. L. (1995):
Investigations on Pd/In-based high temperature stable ohmic contacts on GaAs by x-ray reflectometry and diffractometry.
In: Materials science and engineering. B 29 (1995), S. 70-73, [Artikel]

Riemenschneider, Rolf ; Gottwald, ; Hartnagel, (1995):
Characterisation of SiO2 deposition by low-temperature plasma and photo CVD using low-frequency noise measurements.
In: International Conference on Noise and 1/f Fluctuations: ICNF '95 <1995, Palanga, Litauen>: Proceedings. S. 599, [Konferenzveröffentlichung]

Schultheis, Rüdiger ; Hartnagel, (1995):
3D-finite difference analysis of planar transmission lines as beam electrodes in particle storage rings.
In: Microwaves and optoelectronics: MIOP '95 <1995, Sindelfingen>: Digest. S. 71-75, [Konferenzveröffentlichung]

Schultheis, Rüdiger ; Hartnagel, (1995):
Planar loop coupler as electrode for stochastic cooling systems.
In: Gesellschaft für Schwerionenforschung: Scientific report 1994. S. 248, GSI, [Artikel]

Schüßler, Martin ; Krozer, ; Pfeiffer, ; Statzner, ; Lee, ; Hartnagel, Hans L. (1995):
AlGaAs/GaAs and GaInP/GaAs HBT for high temperature microwave operation.
In: International Symposium on Signals, Systems and Electronics: ISSE '95 <1995, San Francisco, USA>: Proceedings, [Konferenzveröffentlichung]

Sigurdardottir, Anna ; Krozer, V. ; Hartnagel, H. L. (1995):
Modeling and design of InAs/AlSb-resonant tunneling diodes.
In: Applied physics letters. 67 (1995), No. 22, S. 3313-3315, [Artikel]

Simon, Ansgar ; Grüb, Andreas ; Hartnagel, ; Brune, ; Raum, ; Brand, ; Zimmermann, (1995):
A novel micron-thick whisker contacted Schottky diode chip.
In: International Symposium on Space Terahertz Technology <6, 1995, Pasadena, USA>: Conference proceedings, [Konferenzveröffentlichung]

Simon, Ansgar ; Shaalon, ; Grüb, Andreas ; Lin, ; Hartnagel, ; Steup, ; Brand, (1995):
Quasi-optical varactor arrays for frequency multiplication.
In: International Workshop on Terahertz Electronics <3, 1995, Zermatt, Schweiz>: Proceedings, [Konferenzveröffentlichung]

Stehle, M. ; Bischoff, ; Pagnia, ; Horn, ; Marx, ; Weiss, ; Hartnagel, (1995):
Time-resolved luminiscsence measurements on GaAs homostructures using pulse excitation of a scanning tunneling microscope.
In: Journal of vacuum science and technology. B 13 (1995), S. 305-307, [Artikel]

Steinhagen, Frauke ; Hillmer, ; Lösch, ; Schlapp, ; Walter, ; Göbel, ; Kuphal, ; Hartnagel, ; Burkhard, (1995):
AlGaInAs/InP 1.5 My-m MQW DFB laser diodes exceeding 20GHz bandwidth.
In: Electronics letters. 31 (1995), No. 4, S. 274-275, [Artikel]

Stöcker, Jörg ; Kirschbaum, ; Aller, ; Breuer, ; Glesner, ; Hartnagel, (1995):
Der "intelligente" Reifen: Zwischenergebnis einer interdisziplinären Forschungskooperation.
In: Automobiltechnische Zeitschrift. 97 (1995), H. 12, S. 824-832, [Artikel]

Urban, J. ; Bräuer, ; McKinnon, ; Horn, ; Hjort, ; Pagnia, ; Koops, ; Hartnagel, (1995):
The scanning tunneling microscope as a tool for nanolithography: writing nanostructures on Si (110) in air.
In: Microelectronic engineering. 27 (1995), S. 113-116, [Artikel]

1994

Miao, Jianmin ; Hartnagel, ; Tinschert, ; Rück, ; Fricke, (1994):
Fabrication of thin semi-insulating GaAs membranes by ion implantation and its application for piezoelectric actuators.
In: Gesellschaft für Schwerionenforschung: Scientific report 1994. - Darmstadt: GSI,1995. S. 185, Darmstadt, GSI, [Buchkapitel]

Pirling, Thilo ; Fuess, H. ; Hartnagel, H. L. ; Rück, (1994):
Investigations on Pd/In metallisations on GaAs.
In: Gesellschaft für Schwerionenforschung: Scientific report 1994. - Darmstadt: GSI, 1995. S. 184, Darmstadt, GSI, [Buchkapitel]

1993

Beilenhoff, K. ; Klingbeil, Harald ; Heinrich, W. ; Hartnagel, H. L. (1993):
Open and Short Circuits in Coplanar MMIC�s.
In: IEEE Transactions on Microwave Theory and Techniques, S. 1534-1537, 41, (9), [Artikel]

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