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

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

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

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

Schoenherr, Daniel ; Sydlo, Cezary ; Goebel, Thorsten ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter ; Bach, H.-G. ; Kunkel, R. ; Mekonnen, G. G. ; Zhang, R. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2007)

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

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

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

Nicolae, B. ; Chowdhury, D. Roy ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

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

Halbritter, Hubert ; Sydlo, Cezary ; Koegel, Benjamin ; Riemenschneider, Frank ; Hartnagel, Hans L. ; Meissner, Peter :
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.
[Artikel], (2007)

Sigmund, Jochen ; Zogal, Karolina ; Lampin, J. F. ; Ivannikov, V. ; Sydlo, Cezary ; Feiginov, Michael N. ; Pavlidis, Dimitris ; Meissner, Peter ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

Neculoiu, D. ; Konstantinidis, G. ; Müller, A. ; Kostopoulos, A. ; Vasilache, D. ; Mutamba, Kabula ; Sydlo, Cezary ; Hartnagel, Hans L. ; Bary, L. ; Plana, R. :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

Kunkel, R. ; Beling, A. ; Bach, H.-G. ; Mekonnen, G. G. ; Schmidt, D. ; Sydlo, Cezary ; Schoenherr, Daniel ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

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

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

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

Yilmazoglu, Oktay ; Hartnagel, Hans L. ; Pavlidis, Dimitris ; Evtukh, A. ; Litovchenko, V. ; Semenenko, M. ; Gorbanyuk, T. ; Grigoriev, A. :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

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

Dragoman, M. ; Cismaru, A. ; Müller, A. A. ; Dragoman, D. ; Hartnagel, Hans L. ; Plana, R. :
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 . Lluís Pradell ...- 1. ed.- Barcelona : CIMNE , 29. June 2007 ; [proceedings of the 8th International Symposium on RF MEMS and RF Microsystems] / ed. by
[Konferenz- oder Workshop-Beitrag], (2007)

Goebel, Thorsten ; Schoenherr, Daniel ; Sydlo, Cezary ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2007)

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

Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2007)

Goebel, Thorsten ; Schoenherr, Daniel ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. :
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 . IEEE Service Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2007)

Ong, D. S. ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2007)

Cojocari, Oleg ; Hartnagel, Hans L. :
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.
[Artikel], (2006)

Halbritter, Hubert ; Sydlo, Cezary ; Kögel, Benjamin ; Riemenschneider, F. ; Jatta, Sandro ; Hartnagel, Hans L. ; Meissner, Peter :
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 . IEEE Service Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2006)

Mutamba, K. ; Yilmazoglu, Oktay ; Cojocari, Oleg ; Sydlo, Cezary ; Pavlidis, Dimitris ; Hartnagel, Hans L. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2006)

Mutamba, K. ; Sydlo, C. ; Yilmazoglu, O. ; Neculoiu, D. ; Konstantinidis, G. ; Georgakilas, A. ; Chatzopoulos, Z. ; Müller, A. ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2006)

Sydlo, Cezary ; Kögel, Benjamin ; Cojocari, Oleg ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter :
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 .
[Konferenz- oder Workshop-Beitrag], (2005)

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

Cojocari, Oleg ; Sydlo, Cezary ; Hartnagel, Hans L. ; Tiginyanu, I. M. :
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 .
[Konferenz- oder Workshop-Beitrag], (2005)

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

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

Vincze, A. ; Kovac, J. ; Srnanek, R. ; Sigmund, Jochen ; Hartnagel, Hans L. ; Irmer, G. :
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. .
[Konferenz- oder Workshop-Beitrag], (2004)

Vincze, A. ; Michalka, M. ; Podskocova, J. ; Sigmund, Jochen ; Kovac, J. ; Hartnagel, Hans L. :
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. .
[Konferenz- oder Workshop-Beitrag], (2004)

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

Mendis, Rajind ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2004)

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

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

Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Hartnagel, Hans L. ; Schmidt, L.-P. :
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 .
[Konferenz- oder Workshop-Beitrag], (2004)

Handel, P. H. ; Hartnagel, Hans L. ; Sia, K. E. ; Mishra, U. K. ; York, R. :
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 .
[Konferenz- oder Workshop-Beitrag], (2004)

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

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

Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Sydlo, Cezary ; Hartnagel, Hans L. ; Schmidt, L.-P. :
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 .
[Konferenz- oder Workshop-Beitrag], (2004)

Zverev, V. N. ; Muhammad, M. ; Rahman, S. ; Debray, P. ; Saglam, Mustafa ; Sigmund, Jochen ; Hartnagel, Hans L. :
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.
[Artikel], (2004)

Schür, J. ; Biber, S. ; Gumbmann, F. ; Mottet, Bastian ; Cojocari, Oleg ; Schmidt, L.-P. ; Hartnagel, Hans L. :
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 . IEEE Operations Center , M. Thumm ..., ed.- Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2004)

Cojocari, Oleg ; Popa, V. ; Ursaki, V. V. ; Tiginyanu, I. M. ; Mutamba, Kabula ; Saglam, Mustafa ; Hartnagel, Hans L. :
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 . IEEE Operations Center , M. Thumm ..., ed.- Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2004)

Dehe, Alfons ; Beilenhoff, Klaus ; Fricke, Klaus ; Klingbeil, Harald ; Krozer, Viktor ; Hartnagel, Hans L. :
Microwave measurement.
In: Electrical measurements, signal processing and displays / ed. by John G. Webster. -. CRC Pr., Atlanta, Ga. , Chapt. 19, Sect. 1. ISBN ISBN 0-84931733-9
[Buchkapitel], (2004)

Vicente, C. ; Mattes, M. ; Cervello, A. ; Wolk, D. ; Mottet, Bastian ; Hartnagel, Hans L. ; Mosig, J. ; Raboso, D. :
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. .
[Konferenz- oder Workshop-Beitrag], (2004)

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

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

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

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

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2004)

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

Mottet, Bastian ; Sydlo, Cezary ; Kögel, Benjamin ; Robillard, Q. de ; Cojocari, Oleg ; Hartnagel, Hans L. :
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 . IEEE Service Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2004)

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

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

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

Saglam, Mustafa ; Sigmund, Jochen ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2003)

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

Evtukh, A. A. ; Litovchenko, V. G. ; Litvin, Yu. M. ; Hartnagel, Hans L. ; Yilmazoglu, Oktay :
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 .
[Konferenz- oder Workshop-Beitrag], (2003)

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

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

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

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

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

Valakh, M. Ya. ; Litovchenko, V. G. ; Strelchuk, V. V. ; Hartnagel, Hans L. ; Sigmund, Jochen :
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. . Nauka [u.a.] , Moskva
[Konferenz- oder Workshop-Beitrag], (2003)

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

Ensling, David ; Hunger, Ralf ; Kraft, Daniel ; Mayer, Thomas ; Jaegermann, Wolfram ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Hartnagel, Hans L. :
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
[Artikel], (2003)

Biber, S. ; Schmidt, L.-P. ; Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. :
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 . ESA Publ. Div. , Noordwijk
[Konferenz- oder Workshop-Beitrag], (2003)

Mendis, R. ; Sydlo, Cezary ; Sigmund, Jochen ; Feiginov, Michael N. ; Meissner, Peter ; Hartnagel, Hans L. :
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 . IEEE Service Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2003)

Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Biber, S. ; Schmidt, L.-P. ; Hartnagel, Hans L. :
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 . ESA Publ. Div. , Noordwijk
[Konferenz- oder Workshop-Beitrag], (2003)

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

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

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

Sydlo, Cezary ; Sigmund, Jochen ; Hartnagel, Hans L. ; Loata, G. ; Siebert, K. J. ; Roskos, H. G. :
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 . IEEE Operations Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2002)

Saglam, Mustafa ; Leo, E. ; Bozzi, M. ; Perregrini, L. ; Rodriguez-Girones Arboli, Manuel ; Arcioni, P. ; Hartnagel, Hans L. :
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 . CMP Europe , London
[Konferenz- oder Workshop-Beitrag], (2002)

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

Hartnagel, Hans L. ; Mutamba, Kabula ; Pfeiffer, J. :
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
[Artikel], (2002)

Sigmund, Jochen ; Saglam, Mustafa ; Hartnagel, Hans L. ; Miehe, Gerhard ; Fuess, Hartmut :
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 .
[Konferenz- oder Workshop-Beitrag], (2002)

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

Megej, Alexander ; Beilenhoff, Klaus ; Schüßler, Martin ; Ziroff, A. ; Mottet, Bastian ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hamann, C. D. ; Baican, R. ; Hartnagel, Hans L. :
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 . IEEE Service Center , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2002)

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

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

Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. :
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 . Pergamon Pr. , Oxford
[Konferenz- oder Workshop-Beitrag], (2002)

Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. :
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 . ESA Publ. Div. , Noordwijk
[Konferenz- oder Workshop-Beitrag], (2002)

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

Sigmund, Jochen ; Saglam, Mustafa ; Hartnagel, Hans L. ; Zverev, V. N. ; Raichev, O. E. ; Debray, P. ; Miehe, Gerhard ; Fuess, Hartmut :
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.
[Artikel], (2002)

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

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

Hartnagel, Hans L. ; Mutamba, Kabula ; Brandt, Michael ; Yilmazoglu, Oktay :
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. Wiley-VCH-Verl., Weinheim
[Buchkapitel], (2002)

Litvin, Yu. M. ; Evtukh, A. A. ; Yilmazoglu, Oktay ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2002)

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. :
A nanoscale electron waveguide for very high-speed analog-to-digital converters.
In: WOCSDICE <2002, Chernogolovka>: Proceedings ...- 2002.- S. 141 .
[Konferenz- oder Workshop-Beitrag], (2002)

Mimura, H. ; Yilmazoglu, Oktay ; Shimawaki, H. ; Yokoo, K. ; Mutamba, K. ; Hartnagel, Hans L. :
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 . IEEE , Piscataway, NJ
[Konferenz- oder Workshop-Beitrag], (2001)

Yokoo, K. ; Okamura, K. ; Hasegawa, H. ; Mimura, H. ; Yilmazoglu, Oktay ; Mutamba, Kabula ; Hartnagel, Hans L. ; Ishizuka, H. ; Kawamura, Y. :
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 .
[Konferenz- oder Workshop-Beitrag], (2001)

Hartnagel, Hans L. ; Megej, A. ; Mutamba, K. :
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 .
[Konferenz- oder Workshop-Beitrag], (2001)

Hartnagel, Hans L. ; Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel :
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 . Trans Tech Publ. , Uetikon, Zürich
[Konferenz- oder Workshop-Beitrag], (2001)

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

Hartnagel, Hans L. ; Yilmazoglu, Oktay ; Mutamba, Kabula :
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 .
[Konferenz- oder Workshop-Beitrag], (2000)

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

Yokoo, K. ; Okamura, K. ; Mimura, H. ; Yilmazoglu, Oktay ; Arslan, D. ; Hartnagel, Hans L. ; Ishizuka, H. :
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 . VDE-Verl. , Berlin (u.a.)
[Konferenz- oder Workshop-Beitrag], (2000)

Lin, Chih-I. ; Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Saglam, Mustafa ; Szeliga, P. ; Hartnagel, Hans L. :
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 . VDE-Verl. , Berlin (u.a.)
[Konferenz- oder Workshop-Beitrag], (2000)

Mimura, H. ; Okamura, K. ; Shimawaki, H. ; Yokoo, K. ; Yilmazoglu, Oktay ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2000)

Saglam, Mustafa ; Megej, A. ; Sigmund, Jochen ; Rodriguez-Girones Arboli, Manuel ; Mutamba, Kabula ; Ichizli, Victoria M. ; Lin, C.-I. ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2000)

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

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

Mottet, Bastian ; Sydlo, Cezary ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (2000)

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

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

Lin, Chih-I. ; Rodriguez-Girones Arboli, Manuel ; Ichizli, Victoria M. ; Saglam, Mustafa ; Szeliga, P. ; Hartnagel, Hans L. :
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 . VDE-Verl. , Berlin (u.a.)
[Konferenz- oder Workshop-Beitrag], (2000)

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

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

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

Hartnagel, Hans L. ; Pfeiffer, J. ; Mutamba, K. ; Peerlings, J. ; Riemenschneider, R. ; Meißner, P. :
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 .
[Konferenz- oder Workshop-Beitrag], (1999)

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

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

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

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

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

Hartnagel, Hans L. ; Arslan, D. ; Brandt, M. ; Dehé, A. ; Mutamba, K. ; Vogt, :
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 .
[Konferenz- oder Workshop-Beitrag], (1998)

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

Hartnagel, Hans L. ; Mutamba, ; Sigurdardottir, :
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 .
[Konferenz- oder Workshop-Beitrag], (1998)

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

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

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

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

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

Schüßler, Martin ; Statzner, ; Granero, ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (1997)

Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (1996)

Schüßler, Martin ; Statzner, ; Lin, ; Krozer, ; Horn, ; Hartnagel, Hans L. :
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], (1996)

Hartnagel, Hans L. :
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 . Elsevier , Amsterdam
[Konferenz- oder Workshop-Beitrag], (1996)

Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (1996)

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

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

Tiginyanu, I. ; Miao, ; Hartnagel, Hans L. ; Rück, ; Tinschert, ; Ursaki, ; Ichizli, Victoria M. :
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 .
[Konferenz- oder Workshop-Beitrag], (1996)

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

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

Schüßler, Martin ; Krozer, ; Pfeiffer, ; Statzner, ; Lee, ; Hartnagel, Hans L. :
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 .
[Konferenz- oder Workshop-Beitrag], (1995)

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

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

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

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