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Number of items: 160.

Lee, Wen Zhao ; Ong, Duu Sheng ; Choo, Kan Yeep ; Yilmazoglu, Oktay ; Hartnagel, Hans L. (2021):
Monte Carlo evaluation of GaN THz Gunn diodes.
In: Semiconductor Science and Technology, 36 (12), IOP Publishing, ISSN 0268-1242,
DOI: 10.1088/1361-6641/ac2b4d,
[Article]

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, 12 (2), p. 1700418. DOI: 10.1002/pssr.201700418,
[Article]

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.
pp. 1-4, 9th International Conference on Materials Science and Condensed Matter Physics, Chisinau, Moldova, [Conference or Workshop Item]

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,
[Article]

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, 64 (8), pp. 3482-3488. IEEE, ISSN 1557-9646,
DOI: 10.1109/TED.2017.2718541,
[Article]

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.
pp. 1-2, Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017 42nd International Conference on, [Conference or Workshop Item]

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.
10248, p. 1024811, Nanotechnology VIII, [Conference or Workshop Item]

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, 50 (3), pp. 035108. IOP Publishing, [Article]

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, 30 (065005), pp. 1-19. ISSN 0268-1242,
[Article]

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, 9 (6), pp. 811-818. [Article]

Hartnagel, Hans L. ; Al-Daffaie, Shihab (2015):
Graphene Plasmonics for the Enhancement of THz-Signal Transfer.
pp. 1-3, The 39th European Workshop on Compound Semiconductor Devices and Integrated Circuits, [Conference or Workshop Item]

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, 38 (3), pp. 543-562. The Scientific and Technological Research Council of Turkey, [Article]

Hartnagel, Hans L. ; Preu, Sascha (2014):
Graphene THz Circuitry by Nano-Constriction Designs.
WOCSDICE 2014, [Conference or Workshop Item]

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.
pp. 1-2, Vacuum Nanoelectronics Conference (IVNC), 2012 25th International, [Conference or Workshop Item]

Koops, Hans W. P. ; Al-Daffaie, Shihab ; Hartnagel, Hans L. ; Rudzinski, A. (2012):
Development of a miniaturized Dynatron THz-Oscillator with a FEBIP system.
pp. 1-4, Vacuum Nanoelectronics Conference (IVNC), 2012 25th International, [Conference or Workshop Item]

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.
pp. 1-4, 3rd ITG Int. Vacuum Electronics Workshop Physikzentrum Bad Honnef , Germany, [Conference or Workshop Item]

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, [Article]

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

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, 55 (5), pp. 1018-1028. DOI: 10.1109/TMTT.2007.895400,
[Article]

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, [Conference or Workshop Item]

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.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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, 61, pp. 172-177. [Article]

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, 22, pp. 1092-1096. [Article]

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, [Conference or Workshop Item]

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, 22, pp. 981-987. [Article]

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, 13, pp. 367-373. [Article]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 90, pp. 113102-1 - 113102-3. [Article]

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

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 61, pp. 247-249. [Article]

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.
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, 29. June 2007 ; [proceedings of the 8th International Symposium on RF MEMS and RF Microsystems] / ed. by, Lluís Pradell ...- 1. ed.- Barcelona : CIMNE, [Conference or Workshop Item]

Goebel, Thorsten ; Schoenherr, Daniel ; Sydlo, Cezary ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2007):
Resonant metal gratings for THz material characterization.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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

Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. (2007):
THz Schottky diodes on epitaxial AIGaAs-membrane.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

Goebel, Thorsten ; Schoenherr, Daniel ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. (2007):
THz grating sensors for investigation of thin dielectric layers.
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, Piscataway, NJ, IEEE Service Center, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 24, pp. 2544-2552. [Article]

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.
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, Piscataway, NJ, IEEE Service Center, [Conference or Workshop Item]

Mutamba, K. ; Yilmazoglu, Oktay ; Cojocari, Oleg ; Sydlo, Cezary ; Pavlidis, Dimitris ; Hartnagel, Hans L. (2006):
Technology of Wide-Bandgap Diode Struvtures for High Frequency Operation.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 20, pp. 23-32. [Article]

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, [Conference or Workshop Item]

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

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.
87, In: Applied physics letters, pp. 25103-252105. [Article]

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 terahertz Schottky diodes.
In: IEEE Transactions on Instrumentation and Measurement, 53 (2), pp. 581-587. IEEE, ISSN 0018-9456,
DOI: 10.1109/TIM.2003.820487,
[Article]

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., [Conference or Workshop Item]

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., [Conference or Workshop Item]

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, 58 (9/10), pp. 207-210. De Gruyter, ISSN 0016-1136, e-ISSN 2191-6349,
DOI: https://doi.org10.1515/FREQ.2004.58.9-10.207,
[Article]

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.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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 ..., [Conference or Workshop Item]

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, 19, pp. 923-929. [Article]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 19, pp. 1273-1279. [Article]

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 ..., [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 96, pp. 6353-6356. [Article]

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.
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, M. Thumm ..., ed.- Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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.
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, M. Thumm ..., ed.- Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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. -, pp. Chapt. 19, Sect. 1, Atlanta, Ga., CRC Pr., ISBN ISBN 0-84931733-9,
[Book Section]

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., [Conference or Workshop Item]

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, p. 27, [Conference or Workshop Item]

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, 96, pp. 867-877. [Article]

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, 35, pp. 465-476. [Article]

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, [Conference or Workshop Item]

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: 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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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, 48, pp. 2041-2045. [Article]

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.
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, Piscataway, NJ, IEEE Service Center, [Conference or Workshop Item]

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, 19, pp. 537-542. [Article]

Biber, S. ; Cojocari, Oleg ; Rehm, G. ; Mottet, Bastian ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004):
A novel system for systematic IF noise and DC characterization of THz Schottky diodes.
In: IEEE Transactions on Instrumentation and Measurement, 53 (2), pp. 581-587. IEEE, ISSN 0018-9456,
DOI: 10.1109/TIM.2003.820487,
[Article]

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, 220 (1-4), pp. 46-50. Elsevier, ISSN 01694332,
DOI: 10.1016/S0169-4332(03)00750-5,
[Article]

Litovchenko, V. G. ; Evtukh, A. A. ; Litvin, Yu. M. ; Goncharuk, N. M. ; Hartnagel, Hans L. ; Yilmazoglu, Oktay ; Pavlidis, Dimitris (2003):
Peculiarities of the electron field emission from quantum-size structures.
In: Applied Surface Science, 215 (1-4), pp. 160-168. Elsevier, ISSN 0169-4332,
DOI: 10.1016/S0169-4332(03)00283-6,
[Article]

Hartnagel, Hans L. (2003):
Electron emission modulation effects in microsize structures.
In: Semiconductor physics, quantum electronics and optoelectronics, 6 (1), pp. 62-67. Institute for Semiconductor Physics, National Academy of Sciences of Ukraine, ISSN 1560-8034,
DOI: 10.15407/spqeo6.01.062,
[Article]

Hartnagel, Hans L. ; Rodriguez-Gironés Arboli, Manuel (2003):
Current status and future prospects of semiconductor terahertz electronics.
E86-C, In: IEICE transactions on electronics, (10), pp. 1911-1915. ISSN 0916-8516,
[Article]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, 24, pp. 138-140. [Article]

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

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, 82, pp. 227-229. DOI: 10.1063/1.1537516,
[Article]

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, pp. 526-531. [Article]

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.
In: International Workshop Nanophotonics <2003, Niznij Novgorod>: Proceedings ... / red. V. B. Smagin.- Moskva: Nauka [u.a.], 2003.- 136 S., Moskva, Nauka [u.a.], [Conference or Workshop Item]

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, 200, pp. 432-438. ISSN 0168583X,
[Article]

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.
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, Noordwijk, ESA Publ. Div., [Conference or Workshop Item]

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.
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, Piscataway, NJ, IEEE Service Center, [Conference or Workshop Item]

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.
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, Noordwijk, ESA Publ. Div., [Conference or Workshop Item]

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, 38 (13), pp. 657-658. [Article]

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, [Conference or Workshop Item]

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.
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, Piscataway, NJ, IEEE Operations Center, [Conference or Workshop Item]

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.
In: GAAS <10, 2002, Milano>: Conference Proceedings / GAAS 2002, the 10th European Gallium Arsenide and other Semiconductors Application Symposium ...- London: CMP Europe, 2002, London, CMP Europe, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Article]

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, [Conference or Workshop Item]

Megej, Alexander ; Beilenhoff, Klaus ; Schuessler, M. ; 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.
5, In: IEEE transactions on microwave theory and techniques, (12), pp. 3070-3076. Institute of Electrical and Electronics Engineers (IEEE), ISSN 1557-9670,
[Article]

Megej, Alexander ; Beilenhoff, Klaus ; Schuessler, M. ; 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.
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, Piscataway, NJ, IEEE Service Center, [Conference or Workshop Item]

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

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, [Conference or Workshop Item]

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.
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, Oxford, Pergamon Pr., [Conference or Workshop Item]

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.
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, Noordwijk, ESA Publ. Div., [Conference or Workshop Item]

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, 42, pp. 1563-1568. [Article]

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, 20, p. 1174. [Article]

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

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, [Conference or Workshop Item]

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., [Book Section]

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, p. 224, [Conference or Workshop Item]

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, [Conference or Workshop Item]

Lohrberg, H. ; Stoffel, B. ; Voß, B.
Isermann, Rolf ; Breuer, Bert ; Hartnagel, Hans L. (eds.) Deutsche Forschungsgemeinschaft (Corporate Creator) (2002):
Im Laufrad integrierte Messung der Kavitationsaggressivität in Turbomaschinen.
In: Mechatronische Systeme für den Maschinenbau : Ergebnisse aus dem Sonderforschungsbereich 241 "Integrierte Mechanisch-elektronische Systeme für den Maschinenbau (IMES)", pp. 217-230, Weinheim, Wiley-VCH, ISBN 3-527-27730-7,
[Book Section]

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.
In: IVMC 2001: International Vacuum Microelectronics Conference <14, 2001, Davis, CA>: Technical digest. - Piscataway, NJ: IEEE, 2001, Piscataway, NJ, IEEE, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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.
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, Berlin (u.a.), VDE-Verl., [Conference or Workshop Item]

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.
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, Berlin (u.a.), VDE-Verl., [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

Lin, Chih-I. ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Saglam, Mustafa ; Szeliga, P. ; Hartnagel, Hans L. (2000):
Technological developments for THz electronics.
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, Berlin (u.a.), VDE-Verl., [Conference or Workshop Item]

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

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

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

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,
[Conference or Workshop Item]

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

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, [Conference or Workshop Item]

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

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

Riemenschneider, Rolf ; Peerlings, Joachim ; Pfeiffer, Joachim ; Dehé, A. ; Vogt, Andreas ; Meißner, Peter M. ; Hartnagel, Hans L. ; Chitica, N. ; Daleiden, Jürgen ; Streubel, Klaus P. ; Künzel, Harald ; Goertz, W. (1998):
Mechanical-optical analysis of InP-based Bragg Membranes for selective tunable WDM receivers.
In: Proceedings SPIE, 3276, In: SPIE Photonics West´98 : Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States ; proceedings, pp. 185-195,
Berlin, Bellingham, Washington, SPIE, ISBN 0819427152,
DOI: 10.1117/12.302395,
[Conference or Workshop Item]

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, [Article]

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, [Conference or Workshop Item]

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

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

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

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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

Schuessler, M. ; 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, [Conference or Workshop Item]

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, [Conference or Workshop Item]

Schuessler, M. ; 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, [Article]

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

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, [Conference or Workshop Item]

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, [Article]

Schuessler, M. ; 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, [Article]

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, [Conference or Workshop Item]

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

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, [Conference or Workshop Item]

Schuessler, M. ; 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, [Conference or Workshop Item]

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

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

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

This list was generated on Tue Jan 18 05:18:07 2022 CET.