Browsing Center for Organic Photonics and Electronics (COPE) by Title
Now showing items 116-135 of 397
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Fabrication of a blue M x N pixel organic light-emitting diode video display incorporating a thermally stable emitter
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2009-04)A 7x11 pixel blue OLED display was fabricated using a patterned indium-tin-oxide (ITO) substrate. The fabrication process for an M x N pixel organic light-emitting diode (OLED) video display including an electrical insulating ... -
Fabrication of microchannels using polynorbornene photosensitive sacrificial materials
(Georgia Institute of TechnologyElectrochemical Society, 2003-09)A processing method has been demonstrated for the fabrication of microchannels using photosensitive polynorbornene copolymer based sacrificial materials. The channel geometric patterns of sacrificial polymer were made via ... -
Faraday rotation in Co₀.₈₅Zn₀.₁₅Fe₂O₄ spinel ferrite nanoparticulate films under low applied fields
(Georgia Institute of TechnologyAmerican Institute of Physics, 2004-04)Films of Co₀.₈₅Zn₀.₁₅Fe₂O₄ nanoparticles were prepared on silanized glass substrates using aminobenzoic acid/imidazole-modified magnetic nanoparticles. Dispersive Faraday rotations in the nanoparticulate films were observed ... -
First-principles study of the geometric and electronic structure of Au₁₃ clusters: Importance of the prism motif
(Georgia Institute of TechnologyAmerican Physical Society, 2008-04)The geometric structure, symmetry, and spin of Au13 clusters are investigated in the framework of densityfunctional theory, with particular attention paid to the correlation among these properties. Several computational ... -
First-principles theoretical investigation of the electronic couplings in single crystals of phenanthroline-based organic semiconductors
(Georgia Institute of TechnologyAmerican Institute of Physics, 2007-04)The electronic couplings between adjacent molecules in the phenanthroline-based bathocuproine (BCP) and bathophenanthroline (Bphen) crystals have been studied using density functional theory on model dimers. Within the ... -
Focus issue: Thin-film photovoltaic materials and devices introduction
(Georgia Institute of TechnologyOptical Society of America, 2010-09) -
Folding behavior of model proteins with weak energetic frustration
(Georgia Institute of TechnologyAmerican Institute of Physics, 2004-06)The native structure of fast-folding proteins, albeit a deep local free-energy minimum, may involve a relatively small energetic penalty due to nonoptimal, though favorable, contacts between amino acid residues. The weak ... -
Free-standing microscale structures of nanocrystalline zirconia with biologically replicable three-dimensional shapes
(Georgia Institute of TechnologyMaterials Research Society, 2005-02)Microscale zirconia structures with intricate three-dimensional (3D) shapes and nanoscale features were synthesized using diatom (single-celled algae) microshells as transient scaffolds. After exposure to a zirconium ... -
Freestanding microscale 3D polymeric structures with biologically-derived shapes and nanoscale features
(Georgia Institute of TechnologyMaterials Research Society, 2004-09)Microscale polymeric structures with intricate three-dimensional (3D) shapes and nanoscale features were synthesized by using silica-based microshells of diatoms (unicellular algae) as transient scaffolds. Diatom microshells ... -
From Diatom Biomolecules to Bioinspired Syntheses of Silica- and Titania-Based Materials
(Georgia Institute of TechnologyMaterials Research Society, 2010-02)Amorphous silica is (next to CaCO₃) the second most abundant biologically produced inorganic material. A certain group of photosynthetic microalgae, called diatoms, forms complex 3D silica architectures (frustules) ... -
Frontiers in electronic structure theory
(Georgia Institute of TechnologyAmerican Institute of Physics, 2010-03)Current and emerging research areas in electronic structure theory promise to greatly extend the scope and quality of quantum chemical computations. Two particularly challenging problems are the accurate description of ... -
Full configuration interaction potential energy curves for breaking bonds to hydrogen: An assessment of single-reference correlation methods
(Georgia Institute of TechnologyAmerican Institute of Physics, 2003-01)Several approximate correlation methods have been assessed for bond breaking reactions in BH, HF, and CH₄ by comparison to the full configuration interaction limit. Second-order Møller–Plesset perturbation theory, ... -
Full configuration interaction potential energy curves for the X-1 Sigma(+)(g), B-1 Delta(g), and B-'1 Sigma(+)(g) states of C-2: A challenge for approximate methods
(Georgia Institute of TechnologyAmerican Institute of Physics, 2004-11)The C₂ molecule exhibits unusual bonding and several low-lying excited electronic states, making the prediction of its potential energy curves a challenging test for quantum chemical methods. We report full configuration ... -
Fully reconfigurable compact RF photonic filters using high-Q silicon microdisk resonators
(Georgia Institute of TechnologyOptical Society of America, 2011-08)We present a fully reconfigurable fourth-order RF photonic filter on SOI platform with a tunable 3-dB bandwidth of 0.9–5 GHz, more than 38 dB optical out-of-band rejection, FSR up to 650 GHz, and compact size (total area ... -
Functionalization of high frequency SAW RFID devices for ozone dosimetry
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2009)In this paper we report new work on the gravimetric detection of ozone at EPA and OSHA relevant concentrations (approximately 100 ppb) in filtered ambient air. We have extended our proof-of-concept work which used both ... -
Gains for RF tags using multiple antennas
(Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2008-02)Backscatter radio systems, including high frequency radio frequency identification (RFID), operate in the dyadic backscatter channel - a two-way pinhole channel that has deeper small-scale fades than that of a conventional ... -
A general diagrammatic algorithm for contraction and subsequent simplification of second-quantized expressions
(Georgia Institute of TechnologyAmerican Institute of Physics, 2004-08)We present a general computer algorithm to contract an arbitrary number of second-quantized expressions and simplify the obtained analytical result. The functions that perform these operations are a part of the program ... -
General methods for designing single-mode planar photonic crystal waveguides in hexagonal lattice structures
(Georgia Institute of TechnologyOptical Society of America, 2003-06)We systematically investigate and compare general methods of designing single mode photonic crystal waveguides in a two-dimensional hexagonal lattice of air holes in a dielectric material. We apply the rather general methods ... -
Global optimization of sensitivity and dynamic range for two-center holographic recording
(Georgia Institute of TechnologyOptical Society of America, 2003-03)The performance of two-center holographic recording is theoretically studied and described in detail. We present a systematic method for global optimization of two-center holographic recording. Whereas the method presented ... -
Growth direction and morphology of ZnO nanobelts revealed by combining in situ atomic force microscopy and polarized Raman spectroscopy
(Georgia Institute of TechnologyAmerican Physical Society, 2010-01)Control over the morphology and structure of nanostructures is essential for their technological applications, since their physical properties depend significantly on their dimensions, crystallographic structure, and growth ...