Now showing items 1-10 of 263
Plasmonic structures with extraordinary transmission and highly directional beaming properties
(Wiley Periodicals, 2006)
We studied the grating-coupling phenomena between surface plasmons and electromagnetic waves in the microwave spectrum. We first present the experimental and theoretical results of an enhanced microwave transmission though ...
Spectroscopic ellipsometric study of Ge nanocrystals embedded in SiO 2 using parametric models
Ge-rich SiO2 layers on top of Si substrates were deposited using plasma enhanced chemical vapour deposition. Ge nanocrystals embedded in the SiO2 layers were formed by high temperature annealing. The samples were measured ...
Study of the field emitted by a source placed inside a two-dimensional left-handed metamaterial
(Optical Society of America, 2007)
We studied the properties of electromagnetic waves that were emitted from a source placed inside a left-handed medium based on a two-dimensional labyrinth. While the arguments of geometrical optics suggest that the field ...
MOCVD growth and electrical studies of p-type AlGaN with Al fraction 0.35
(Elsevier BV * North-Holland, 2006-04-01)
We present a study on the high performance p-type AlxGa1-xN (x = 0.35) layers grown by low-pressure metalorganic chemical vapor deposition on AIN template/sapphire substrate. The influence of growth conditions on the p-type ...
Comparative study of electroabsorption in InGaN/GaN quantum zigzag heterostructures with polarization-induced electric fields
(AIP Publishing LLC, 2008-05-19)
We present a comparative study on InGaN/GaN quantum zigzag structures embedded in p-i-n diode architecture that exhibit blue-shifting electroabsorption in the blue when an electric field is externally applied to compensate ...
A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores
(Optical Society of America, 2009-12-24)
We report a photometric study of ultra-efficient light emitting diodes (LEDs) that exhibit superior color rendering index (CRI) and luminous efficacy of optical radiation (LER) using semiconductor quantum dot nanocrystal ...
Echinococcus against cancer: why not?
(John Wiley & Sons, Inc., 2003)
Resonant nonradiative energy transfer in CdSe/ZnS core/shell nanocrystal solids enhances hybrid white light emitting diodes
(Optical Society of America, 2008)
We propose and demonstrate hybrid white light emitting diodes enhanced with resonant nonradiative energy transfer in CdSe/ZnS core/shell nanocrystal solids integrated on near-UV InGaN/GaN LEDs. We observe a relative quantum ...
Physics and applications of photonic crystals
(Nanotechnology Research Center NANOTAM, 2004)
In this article, we investigate how the photonic band gaps and the variety of band dispersions of photonic crystals can be utilized for various applications and how they further give rise to completely novel optical ...
Self-aligning planarization and passivation for integration applications in III-V semiconductor devices
This paper reports an easy planarization and passivation approach for the integration of III-V semiconductor devices. Vertically etched III-V semiconductor devices typically require sidewall passivation to suppress leakage ...