Browsing by Keywords "Films"
Now showing items 1-20 of 23
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2D material liquid crystals for optoelectronics and photonics
(Royal Society of Chemistry, 2017)The merging of the materials science paradigms of liquid crystals and 2D materials promises superb new opportunities for the advancement of the fields of optoelectronics and photonics. In this review, we summarise the ... -
Comparison of trimethylgallium and triethylgallium as "ga" source materials for the growth of ultrathin GaN films on Si (100) substrates via hollow-cathode plasma-assisted atomic layer deposition
(AVS Science and Technology Society, 2016-02)GaN films grown by hollow cathode plasma-assisted atomic layer deposition using trimethylgallium (TMG) and triethylgallium (TEG) as gallium precursors are compared. Optimized and saturated TMG/TEG pulse widths were used ... -
Critical coupling in plasmonic resonator arrays
(Optical Society of America, 2011-07-19)We report critical coupling of electromagnetic waves to plasmonic cavity arrays fabricated on Moire surfaces. Dark field plasmon microscopy imaging and polarization dependent spectroscopic reflection measurements reveal ... -
Dye-sensitized solar cell with a titanium-oxide-modified carbon nanotube transparent electrode
(American Institute of Physics, 2011-07-15)Transparent and conductive carbon-based materials are promising for window electrodes in solid-state optoelectronic devices. However, the catalytic activity to redox reaction limits their application as a working electrode ... -
Evidence for Nonradiative Energy Transfer in Graphene-Oxide-Based Hybrid Structures
(American Chemical Society, 2013-11-13)Solution processed graphene variants including graphene oxide (GO) and reduced graphene oxide (RGO) are promising materials for potential optoelectronic applications. To date, efficiency of the excitation energy transfer ... -
Evolution of the mosaic structure in InGaN layer grown on a thick GaN template and sapphire substrate
(Springer, 2013-08-08)The InxGa1-xN epitaxial layers, with indium (x) concentration changes between 0.16 and 1.00 (InN), were grown on GaN template/(0001) Al2O3 substrate by metal organic chemical vapour deposition. The indium content (x), ... -
Extraordinary grating-coupled microwave transmission through a subwavelength annular aperture
(Optical Society of America, 2005-03-07)We studied coupling phenomena between surface plasmons and electromagnetic waves in the microwave spectrum using circular apertures surrounded by array of grooves. We first present experimental and theoretical results of ... -
Flexible organic-inorganic core-shell nanofibers by electrospinning and atomic layer deposition
(CRC Press, 2012)Organic-inorganic core-shell nanofibers were fabricated by combining electrospinning and atomic layer deposition (ALD). In the first step, nylon66 (polymeric organic core) nanofibers having different average fiber diameters ... -
Graphene mode-locked multipass-cavity femtosecond Cr4+:forsterite laser
(Optical Society of America, 2013-04-19)We report, for the first time to our knowledge, the use of graphene as a saturable absorber in an energy-scaled femtosecond Cr4+: forsterite laser. By incorporating a multipass cavity, the repetition rate of the original ... -
HMM based method for dynamic texture detection
(IEEE, 2007)A method for detection of dynamic textures in video is proposed. It is observed that the motion vectors of most of the dynamic textures (e.g. sea waves, swaying tree leaves and branches in the wind, etc.) exhibit random ... -
Investigation of high frequency performance limit of graphene field effect transistors
(AIP Publishing LLC, 2010)Extremely high field effect mobility together with the high surface coverage makes graphene a promising material for high frequency electronics application. We investigate the intrinsic high frequency performance limit of ... -
Isolation and one-way effects in diffraction on dielectric gratings with plasmonic inserts
(Optical Society of America, 2009-01-02)Diffraction of plane waves on dielectric gratings with planar plasmonic inserts is studied with the emphasis put on the anomalous selectivity of diffraction orders. It is shown that some formally propagating orders can be ... -
Large-area semi-transparent light-sensitive nanocrystal skins
(Optical Society of America, 2012)We report a large-area, semi-transparent, light-sensitive nanocrystal skin (LS-NS) platform consisting of single monolayer colloidal nanocrystals. LS-NS devices, which were fabricated over areas up to 48 cm(2) using ... -
Matrix density effect on morphology of germanium nanocrystals embedded in silicon dioxide thin films
(Materials Research Society, 2011)Flash type electronic memories are the preferred format in code storage at complex programs running on fast processors and larger media files in portable electronics due to fast write/read operations, long rewrite life, ... -
Metalorganic chemical vapor deposition growth and thermal stability of the AllNN/GaN high electron mobility transistor structure
(IOP Publishing, 2011)The AlxIn1-xN barrier high electron mobility transistor (HEMT) structure has been optimized with varied barrier composition and thickness grown by metalorganic chemical vapor deposition. After optimization, a transistor ... -
Nanoantenna coupled UV subwavelength photodtectors based on GaN
(Optical Society of America, 2012)The integration of nano structures with opto-electronic devices has many potential applications. It allows the coupling of more light into or out of the device while decreasing the size of the device itself. Such devices ... -
One-pot synthesis of CdS nanoparticles in the channels of mesosructured silica films and monoliths
(American Chemical Society, 2005)Cd(II)-modified mesoporous silica films and/or monoliths synthesized in one pot using a true liquid crystalline (TLC) approach have been reacted with H2S gas to produce CdS-modified mesostructured nanocomposite materials ... -
Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical absorption increased in all polarizations
(Optical Society of America, 2011)In P3HT:PCBM based organic solar cells we propose and demonstrate numerically plasmonic backcontact grating architectures for strong optical absorption enhanced in both transverse-magnetic and transverse-electric polarizations. ... -
Role of the exposed Pt active sites and BaO2 formation in nox storage reduction systems: a model catalyst study on BaOx/Pt(111)
(American Chemical Society, 2011)BaOx(0.5 MLE - 10 MLE)/Pt(111) (MLE: monolayer equivalent) surfaces were synthesized as model NOx storage reduction (NSR) catalysts. Chemical structure, surface morphology, and the nature of the adsorbed species on ... -
Synthesis of mesoporous lithium titanate thin films and monoliths as an anode material for high-rate lithium-ion batteries
(Wiley-VCH Verlag, 2016)Mesoporous Li4Ti5O12 (LTO) thin film is an important anode material for lithium-ion batteries (LIBs). Mesoporous films could be prepared by self-assembly processes. A molten-salt-assisted self-assembly (MASA) process is ...
