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Strongly coupled, high-quality plasmonic dimer antennas fabricated using a sketch-and-peel technique
/forschung/publikationen/strongly-coupled-high-quality-plasmonic-dimer-antennas-fabricated-using-a-sketch-and-peel-technique
A combination of helium- and gallium-ion beam milling together with a fast and reliable sketch-and-peel technique is used to fabricate gold nanorod dimer antennas with an excellent quality factor and…
Improving AlN Crystal Quality and Strain Management on Nanopatterned Sapphire Substrates by High-Temperature Annealing for UVC Light-Emitting Diodes
/forschung/publikationen/improving-aln-crystal-quality-and-strain-management-on-nanopatterned-sapphire-substrates-by-high-temperature-annealing-for-uvc-light-emitting-diodes
Herein, AlN growth by metalorganic vapor-phase epitaxy on hole-type nanopatterned sapphire substrates is investigated. Cracking occurs for an unexpectedly thin-layer thickness, which is associated to…
Group III-Nitride-Based UV Laser Diodes
/forschung/publikationen/group-iii-nitride-based-uv-laser-diodes
Recent progress in the development of deep ultraviolet lasers is reviewed as well as challenges for the heterostructure design and epitaxial growth for AlGaN-based laser diodes are discussed. The…
A Short Introduction to Semiconductor Nanophotonics
/forschung/publikationen/a-short-introduction-to-semiconductor-nanophotonics
Semiconductor nanophotonic devices, confining electronic excitations and light on a nanometer spatial scale, could provide valuable solutions to many challenges that society is facing. One example…
Perspektiven physikalischer Verfahren der Antiseptik und Desinfektion
/forschung/publikationen/perspektiven-physikalischer-verfahren-der-antiseptik-und-desinfektion
Der seit eingien Jahren an Bedeutung gewinnende Einsatz hochenergetischer UVC-Strahlung, antimikrobieller blauer Strahlung und physikalischer kalter Plasmen (KP) zur Desinfektion ist im Vergleich zur…
Calibration Substrate Design for Accurate mm-Wave Probe-Tip Calibration
/forschung/publikationen/calibration-substrate-design-for-accurate-mm-wave-probe-tip-calibration
This work presents the design concept, EM-simulation and measurement results of a new calibration substrate developed to address probe-tip calibration challenges and to improve calibration accuracy…
Structural and luminescence imaging and characterisation of semiconductors in the scanning electron microscope
/forschung/publikationen/structural-and-luminescence-imaging-and-characterisation-of-semiconductors-in-the-scanning-electron-microscope
The scanning electron microscopy techniques of electron backscatter diffraction (EBSD), electron channelling contrast imaging(ECCI) and cathodoluminescence (CL) hyperspectral imaging provide…
Output Matching Network Design for Highly Efficient InP-DHBT W-Band PAs Utilizing a Defected Ground Structure
/forschung/publikationen/output-matching-network-design-for-highly-efficient-inp-dhbt-w-band-pas-utilizing-a-defected-ground-structure
Output matching networks (OMNs) are substantially determining the performance of millimetre wave power amplifiers (PAs). In terms of efficiency, there are two major requirements for OMNs: First is to…
An Improved EM-Simulation Procedure to Extract Extrinsic Elements of Terahertz InP DHBTs
/forschung/publikationen/an-improved-em-simulation-procedure-to-extract-extrinsic-elements-of-terahertz-inp-dhbts
For accurate small-signal modeling of double heterojunction bipolar transistors (DHBT), electromagnetic (EM) simulations of the outer shell of the DHBT are used for de-embedding the external…
A Compact Broadband Marchand Balun for Millimeter-wave and Sub-THz Applications
/forschung/publikationen/a-compact-broadband-marchand-balun-for-millimeter-wave-and-sub-thz-applications
This paper presents a compact broadband millimeter-wave Marchand balun, realized using indium phosphide (InP) transferred substrate (TS) technology. The architecture of this balun is based on a…