Materials Literature
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The crystal orientation effect on optical anisotropy in ultraviolet InGaN∕GaN quantum-well (QW) light-emitting diodes are investigated using the non-Markovian gain model with many-body effects. The spontaneous emission for the y′ polarization largely increases with a crystal angle because of the reduction in the spont…
This study developed an optically controllable transflective spatial filter in a dye-doped cholesteric liquid crystal (DDCLC) film. The mechanism to induce the spatial filter is attributable to the photoisomerization-induced controllability of the redshift of the reflection band in the DDCLC cell. At various pumped in…
Inorganic chalcogenide photoresists are widely used in microelectronics and optoelectronics. Here, we describe strongly nonlinear chalcogenide photoresists fabricated on the basis of Ag-doped As2S3 glassy films. Photoresists are prepared by vacuum coevaporation of As2S3 bulk glass and Ag. Superlinear dissolution chara…
Abstract The paper presents results of plasma assisted combustion experiments using high-voltage, nanosecond pulse duration, high pulse repetition rate discharge and kinetic modeling calculations. In the experiments, two different operation regimes have been identified, (i) oxidation regime with relatively low fuel fr…
Synthesis of metal nanowires has opened many new possibilities for designing ideal building blocks for future nanodevices. In this work, zinc nanowires with lengths of micrometre magnitude were synthesized in high yield by a shortcut hydrothermal strategy. The synthesis involves a template-free, non-seed and catalyst-…
A technology for electrical detection of protein biomarkers has been developed. It is based on developing high-density, low-volume multiwell plate devices. The scientific core of this technology lies in integrating nanoporous membranes with microfabricated chip platforms. This results in the conversion of individual p…
Many studies have been reported about the catalytic recombination of oxygen and nitrogen on a silica surface, which is quite important for the reentry of a space vehicle. But, the reaction mechanism is not fully understood. Hence, in this study, we are constructing a catalytic reaction model using the ab initio calcul…
Mechanical, electrical and micro-structural properties of new electronic conducting ceramic foams are reported. Ceramic foams are prepared using the slurry of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) by the polymeric sponge method, which is followed by spray coating for increasing the number of coatings–sinterings on po…
El hombre por su actividad genera un enorme volumen de residuos que en la actualidad estan ocasionando severos problemas de almacenamiento a nivel mundial. Frente a esta problematica, una alternativa posible es el compostaje. El objetivo del presente trabajo fue medir la evolucion de la temperatura durante el proceso…
In this paper, a methodology for coupling a solid-fluid interactive system, representative of a bird impact, with a composite cohesive damage approach, capable of determining the interlaminar degradation or failure in aerospace composite structures, is presented. The Smooth Particle Hydrodynamic approach, due to its e…
We report a case of allergic contact dermatitis to 4-chloro-2-[methylthio]pyrimidine-5-carboxylic acid ethyl ester and methyl 4-hydroxy-2-hexynoate in a laboratory chemist.
The authors report on the growth and characterization of CeO2 epitaxial films doped with 18at.% HfO2 (HDC) as gate dielectrics for Si technology prepared by ultrahigh vacuum pulsed laser deposition. In situ reflection high-energy electron diffraction and cross-sectional high-resolution transmission electron microscopy…
The effect of intramolecular relaxations on the damping of longitudinal and transverse phonons was studied in poly(methylphenylsiloxane) (PMPS) and poly(ethylmethylsiloxane) (PEMS) polymers by means of Brillouin spectroscopy. It is shown that studies of the polarized and depolarized Brillouin spectra as functions of t…
We demonstrate the local depassivation of hydrogenated Ga1−xMnxAs by pulsed-laser annealing. The controlled removal of Mn–H defect complexes, which form upon hydrogenation and render Mn acceptors inactive, is achieved by focused laser irradiation. As a result, regions of electrically and ferromagnetically active Ga1−x…
We study the low energy behavior of the one dimensional Hubbard model across the Mott metal–insulator phase transition in an external magnetic field. In particular we calculate elements of the dressed charge matrix at the critical point of the Mott transition for arbitrary Hubbard repulsion and magnetization numerical…
Electronic transport of ultrananocrystalline diamond involves the interplay between disorder, Anderson localization, and phase coherence. We show that variable range hopping explains many key features of the conductivity including the large low temperature negative magnetoresistance. Our numerical studies suggest two…
Abstract In the present study, the transition of a polymeric material from the linear to the nonlinear viscoelastic behavior and the determination of the nonlinearity stress threshold variation with time and temperature are investigated. For this purpose a systematic experimental program consisted of thermal and mecha…
Abstract This paper presents an experimental study of tribological characteristics of electroless Ni‐P (EN) coatings and optimisation of coating process parameters based on Taguchi method coupled with grey relational analysis. A grey relational grade obtained from the grey relational analysis is used as performance in…
Abstract Isothermal crystallization kinetics, subsequent melting behavior, and the crystal morphology of short carbon fiber and poly(ethylene 2,6‐naphthalate) composites (SCF/PEN) were investigated by using differential scanning calorimetry and polarized optical microscopy. The crystal morphology of the composites iso…
The molecular understanding of protein stabilization by the disaccharide trehalose in extreme temperature or hydration conditions is still debated. In the present study, we investigated the role of trehalose on the dynamics of the protein C-phycocyanin (C-PC) by neutron scattering. To single out the motions of C-PC hy…