Materials Literature
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Aluminium-doped zinc oxide (ZnO : Al) films have been deposited by RF magnetron sputtering on Pyrex glass substrates. The structural, electrical and optical properties of films as a function of Al concentration have been studied. Al-doped films exhibit high optical transparency and a reduction of resistivity with incr…
Abstract A novel water‐soluble electroactive polymer, aniline pentamer crosslinked chitosan (Pentamer‐ c ‐Chi), was prepared by condensation polymerization of the terminal carboxyl groups in aniline pentamer with the amino side groups in chitosan in aqueous solution. The carboxyl groups were activated by N ‐hydroxysuc…
We have studied the microscopic dynamics of a glass-forming liquid in the soft confinement formed by microemulsion droplets using inelastic neutron scattering. The confined liquid was propylene glycol, the outer, hydrophobic phase was decalin, and the surfactant sodium dioctylsulfosuccinate (AOT) with the same composi…
Genetically engineered silk-elastinlike protein polymer (SELP) analogs, SELP-47 K and -415 K, consisting of varying ratio(s) and length(s) of silk and elastin in their monomer repeats and capable of spontaneous hydrogel formation were evaluated as matrices for controlled adenoviral release in vitro. The degree of swel…
We report on the first inorganic nanobuds: WS2 nanotubes decorated with fullerene-like particles. They were synthesized by sulfurization of W5O14 nanowires. The fullerene-like particles nucleate in surface corrugations of the nanowires and grow by a diffusion process simultaneously with the transformation of nanowires…
Paramagnetic rare-earth elements have been examined as NMR structural probes in polyoxoanionic solids, which have a variety of applications as luminescent materials that are usually disordered and therefore intractable by traditional structural methods. Thirteen Keggin and Wells-Dawson polyoxotungstates containing sub…
The negative-thermal-expansion material ZrW(2)O(8) is known to undergo an order-disorder phase transition which affects its expansion behavior. In this study, Ti(4+) and Sn(4+) are examined as possible substituting ions for the Zr(4+) position in ZrW(2)O(8). This substitution leads to a decrease in cell parameters, as…
One of the major challenges in single-molecule studies is how to extract reliable information from the inevitably noisy data. Here, we demonstrate the unique capabilities of multichannel joint statistical analysis of multispectral time series using Föster resonance energy transfer (FRET) in single quantum dot (QD)-org…
The behavior of polymer-layered silicate nanocomposites is modeled through various factorial and mixtures design methodologies in order to optimize the composite performance and to accurately predict the properties especially for the nonpolar polymer systems. The various factors studied for the factorial design are vo…
"The microscopic defects and their effects on the electrical properties of phosphorus-doped ZnO films epitaxially grown on (0 0 0 1) sapphire and ZnO substrates by pulsed laser deposition are studied. While threading dislocations were observed only in heteroepitaxial films, a high density of partial dislocations assoc…
Mathematical crystallography is the branch of crystallography dealing specifically with the fundamental properties of symmetry and periodicity of crystals, topological properties of crystal structures, twins, modular and modulated structures, polytypes and OD structures, as well as the symmetry aspects of phase transi…
Abstract A series of polycarbonate copolymers were synthesized by the ring‐opening bulk polymerization of 2‐phenyl‐5,5‐bis(hydroxymethyl) trimethylene carbonate (PTC) and 5,5‐dimethyl trimethylene carbonate (DTC) with tin(II) 2‐ethylhexanoate and aluminum isopropoxide as initiators. The copolymers obtained were charac…
We give a microscopic derivation of the Clausius-Mossotti relations for a homogeneous and isotropic magnetodielectric medium consisting of radiatively broadened atomic oscillators. To this end the diagram series of electromagnetic propagators is calculated exactly for an infinite bicubic lattice of dielectric and magn…
Recently, pressure tuning of the thermoelectric figure of merit has been reported for several materials Bi2Te3 based thermoelectric materials [2],[10],[12]. In order to investigate the bulk properties of Bi2Te3, Sb2Te3, and their solid solution in detail, we have performed structural studies up to 20 GPa. Our diffract…
Abstract To improve their adhesion properties, ultra high modulus polyethylene (UHMPE) fibers were treated by an atmospheric pressure helium plasma jet (APPJ), which was operated at radio frequency (13.56 MHz). The surface properties of the fibers were investigated by X‐ray photoelectron spectroscopy (XPS), scanning e…
Well-aligned, low-resistive zinc oxide (ZnO) nanorods were grown on ZnO-coated glass and p-Si substrates using a simple and economic solution method. The device performance of ZnO nanorods has been investigated by studying their p-n junction diode behaviour at room temperature. The as-grown n-ZnO/p-Si diode exhibited…
A real-space description of inelastic scattering in scanning transmission electron microscopy is derived with particular attention given to the implementation of the projected potential approximation. A hierarchy of approximations to expressions for inelastic images is presented. Emphasis is placed on the conditions t…
Abstract The isothermal crystallization kinetics of PEO and PE blocks within various triblock terpolymers were studied by DSC. The effect of the geometry of the microdomains was analyzed by studying different compositions of PE‐ b ‐PS‐ b ‐PEO triblock terpolymers. The crystallization rate decreased for decreasing bloc…
This article provides a review of thermoplastic starch polymers [unlike polymers with added granular starch] including an introduction to biodegradable polymers and thermoplastic starch polymers; a review of thermoplastic starch polymer development; a review of reactive modification of thermoplastic starch, examining…
Flavodoxin has been recently recognized as an essential protein for a number of pathogenic bacteria including Helicobacter pylori, where it has been proposed to constitute a target for antibacterial drug development. One way we are exploring to screen for novel inhibitory compounds is to perform thermal upshift assays…