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

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

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

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

Hartnagel, H. L.
Sontea, Victor ; Tiginyanu, Ion (eds.) :

Plasmonic Effects for Enhanced Optical Mixing in View of THz Signal Generation.
[Online-Edition: http://dx.doi.org/10.1007/978-981-287-736-9_46]
In: 3rd International Conference on Nanotechnologies and Biomedical Engineering: ICNBME-2015, Chisinau, Republic of Moldova. 3rd International Conference on Nanotechnologies and Biomedical Engineering: ICNBME-2015, September 23-26, 2015, Chisinau, Republic of Moldova Springer Singapore
[Konferenz- oder Workshop-Beitrag], (2015)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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