Materials Literature
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In the present investigation, electrochemical deposition of platinum particles was carried out on boron doped diamond (BDD) films by using cyclic voltammetry at different potential sweep rates while maintaining the Pt concentration and number of potential cycles during the deposition as constant for all samples. The B…
Precipitates formed during the growth of manganite thin films by pulsed laser deposition have been an obstacle for fabricating high quality devices incorporating these ferromagnetic metals. In order to analyze the nature of these precipitates, we have investigated their spectroscopic and structural properties by scann…
The aim of this work is to investigate the photovoltaic properties of indium tin oxide/poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) / poly(3-hexylthiophene-2,5-diyl) /fullerene/aluminum bilayer heterojunction solar cells when the active polymer layer is doped with triplet organic molecules (a platinum por…
The complexation of lysozyme and sodium (sulfamate carboxylate) isoprene/ethylene oxide (SCIEO) at pH = 7.4 and the release of lysozyme from the complexes in the presence of NaCl were investigated. Through electrostatic and hydrophobic interactions, lysozyme and SCIEO form stable complex nanoparticles. The complexatio…
Abstract Polycations of two oligoanilines based on Wurster's blue, N , N′ , N″ ‐tris[4‐(dimethylamino)phenyl]‐ N , N′ , N″ ‐trimethyl‐1,3,5‐benzenetriamine ( 2 ) and N , N′ ‐bis(3‐{ N ‐[4‐(dimethylamino)phenyl]‐ N ‐methylamino}phenyl)‐ N , N′ ‐dimethyl‐ p ‐phenylenediamine ( 3 ), have been generated efficiently by a s…
The pressure ( P ) dependence of AC susceptibility and electrical resistivity of FeSe 0.88 and FeSe 0.5 Te 0.5 has been studied. The superconducting transition temperature ( T c ) of FeSe 0.5 Te 0.5 is found to be more sensitive to P than it is in FeSe 0.88 , which is believed to arise from the strongly distorted stru…
Fullerene functionalized carbon nanotubes---NanoBuds---form a novel class of hybrid carbon materials, which possesses many advantageous properties as compared to the pristine components. Here, we report a theoretical study of the electronic transport properties of these compounds. We use both ab initio techniques and…
Steplike electronic band potentials (band offsets) in core/shell CdS/CdTe nanocrystals (see picture, ML=monolayer) can be tuned between quasi-type-II and type-I regimes by controlling the CdTe shell thickness. The nanocrystals are characterized by transmission electron microscopy, elemental analysis, and optical measu…
Fibers with mechanical properties and water stability suitable for tissue engineering have been developed from soyproteins. Proteins are biocompatible and biodegradable and are preferred over synthetic polymers for medical applications. Although plant proteins are abundant and inexpensive and can be made into various…
We report the formation and direct observation of self-interstitials in surface proximity of an elemental semiconductor by exploiting subthreshold effects in a new generation of aberration-corrected transmission electron microscopes. We find that the germanium interstitial atoms reside close to hexagonal, tetragonal,…
We investigate the electronic properties of epitaxial ${\text{Co}}_{2}({\text{Fe}}_{x}{\text{Mn}}_{1\ensuremath{-}x})\text{Si}$, ${\text{Co}}_{2}\text{Fe}({\text{Al}}_{1\ensuremath{-}x}{\text{Si}}_{x})$, and ${\text{Co}}_{2}({\text{Cr}}_{0.6}{\text{Fe}}_{0.4})\text{Al}$ films on MgO(100) substrates using circular dich…
Neutron powder diffraction and temperature dependent dielectric studies were carried out on Ca-substituted Na0.5Bi0.5TiO3, i.e., (Na0.5Bi0.5)1−xCaxTiO3. Stabilization of an orthorhombic phase even at a low Ca concentration (0.05<x≤0.10) suggests that Na0.5Bi0.5TiO3 (NBT) is susceptible to orthorhombic distortio…
The UC Berkeley Comfort Model is a helpful simulation tool for the assessment of thermal comfort in non-uniform environments. A major element of the model is the implementation of a clothing node, which considers both heat and moisture capacitance of clothing. Heat capacity of the clothing has been demonstrated to be…
Surface plasmon resonance studies showed pullulan cinnamates (PCs) with varying degrees of substitution (DS) adsorbed onto regenerated cellulose surfaces from aqueous solutions below their critical aggregation concentrations. Results on cellulose were compared to PC adsorption onto hydrophilic and hydrophobic self-ass…
The 1.54 μm photoluminescence and decay time of Er-doped amorphous silicon nitride films with different Si concentrations are studied in the temperature range of 4 to 320 K. The temperature quenching of the Er emission lifetime demonstrates the presence of nonradiative trap centers due to excess Si in the films. The t…
High-pressure (P) Raman $(0\ensuremath{\le}\text{P}\ensuremath{\le}12\text{ }\text{GPa})$ and Infrared $(0\ensuremath{\le}\text{P}\ensuremath{\le}24\text{ }\text{GPa})$ spectra are collected on two samples of the ${\text{LaMn}}_{1\ensuremath{-}x}{\text{Ga}}_{x}{\text{O}}_{3}$ series: $x=0.2$ and 0.6 with cooperative J…
We investigate the effect of asymmetry in bilayer graphene induced by a diatomic substrate (such as SiC) and its influence on the bilayer spectrum in zero and strong magnetic fields. We also determine selection rules for inter-Landau level transitions, taking into account all four π bands.
We apply a Hartree-Fock approximation to a two-orbital model proposed for Fe pnictide superconductors. It is found that the antiferromagnetic (AFM) order with the ordering vector Q=(pi,0) is realized. The AFM order appears simultaneously with ferro-orbital order, the latter leads to a secondary lattice distortion. We…
Electrospun cellulose-based nano and microfibers and a nematic liquid crystal are used to assemble an electro-optical (EO) light-scattering device that shows enhanced characteristics when compared to similar devices. Based on the controlled scattering of light in the composite system, the device can achieve light tran…
When going from periodic surfaces to isolated clusters or nanoparticles, there is a big increase in the reactivity of Au and Cu toward SO(2). Density functional calculations indicate that the enhancement in the SO(2) adsorption energy is due to the presence of corner sites (i.e., metal atoms with a low coordination nu…