Materials Literature
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Abstract Clay addition has been shown to affect polymer resins positively in terms of several physical and chemical properties, including mechanical performance, high temperature endurance and durability. These increases are limited only to relatively low concentrations of reinforcement phase, but at these low concent…
The structural and electronic properties of five terminations of cubic lead titanate (PbTiO3) (110) polar surface were investigated by first-principles total-energy calculations using a periodic slab model. On the PbTiO termination, an anomalous filling of conduction band was observed, whereas on the O2 termination, t…
Abstract Conductive polyaniline/polyacrylonitrile (PAn/PAN) composite fibers were prepared by keeping PAN fibers in various solutions containing aniline and then by polymerization of aniline sorbed by fibers with potassium dichromate as an oxidant. In examined polymerization media, aqueous HCl gave composite fibers wi…
There is growing interest in the use of ammonia as a fuel in Solid Oxide Fuel Cells (SOFCs). However, the possible reaction between the electrolyte and ammonia, and its potential effect on performance, has received little attention. In this paper, we report an investigation of the high temperature (950 °C) reaction of…
Density functional theory is applied within a supramolecular approach to the study of the guest−host interactions in [Fe(bpy) 3 ] 2+ @Y and their influence on the structural, energetic, and 57 Fe Mössbauer spectroscopy properties of the encapsulated [Fe(bpy) 3 ] 2+ complex in the low- and high-spin states. The structu…
Abstract A novel method was developed for fabricating poly(trimethylene terephthalate) (PTT)/BaSO 4 nanocomposites using in situ polymerization. A nano‐BaSO 4 suspension was prepared by reacting H 2 SO 4 with Ba(OH) 2 in 1,3‐propanediol (PDO). The mean size of original nano‐BaSO 4 is 15–23 nm. PTT matrix was synthesiz…
Abstract The kinetics of gas‐liquid catalytic reactions can be strongly promoted when these are performed in interfacial catalytic membrane reactors instead of other three‐phase reactors such as slurry stirrers or trickle beds. The well‐defined gas‐liquid‐catalyst contact in this system avoiding diffusional limitation…
QDs may offer significant advantages in environmental and bead-based applications where the target cells need to be discriminated above background fluorescence. We have examined the possible applications of QDs for flow cytometric measurements (FCM) by studying their excitation - emission spectra and their binding to…
Spherical gold nanoparticles are synthesized in worm-like catanionic reverse micelles, demonstrating the absence of shape templating except when the growth of the particles is slow. In situ time resolved SAXS measurements show that the microstructure of the microemulsion is conserved during the whole reaction. The liq…
Abstract Hybrid materials based on silicic acid and polymethyl methacrylate (PMMA) were prepared by in situ bulk polymerization of a silicic acid sol and MMA mixture. Silicic acid sol was obtained by tetrahydrofuran (THF) extraction of silicic acid from water. Silicic acid was prepared by hydrolysis and condensation o…
Structural characterization of rare earth adsorption at surfaces or interfaces of $\ensuremath{\beta}{\text{-Si}}_{3}{\text{N}}_{4}$ grains within silicon nitride ceramics has recently been reported by three different groups using $Z$-contrast scanning transmission electron microscopy (STEM) imaging. Here we report th…
The possibility of the formation of different silica nanostructures based on fully coordinated spheroidal nanocages (SiO 2 ) 24 is theoretically investigated using a pairwise potential and the ReaxFF SiO reactive force field. Molecular dynamics simulations at T = 300 K predict that while these nanocages are thermally…
An SF(6)-based plasma has been employed to perform in-flight etching of silicon nanocrystals (Si-NCs) after they were synthesized in an SiH(4)-based plasma. The photoluminescence of the Si-NCs blue-shifts after etching, indicating an etching-induced size reduction of the Si-NCs. It is shown that both the SF(6) plasma…
The nature of the polarons in the optimally doped colossal magnetoresistive materials ${\text{La}}_{0.7}{\text{Ba}}_{0.3}{\text{MnO}}_{3}$ (LBMO) and ${\text{La}}_{0.7}{\text{Sr}}_{0.3}{\text{MnO}}_{3}$ (LSMO) is studied by elastic and inelastic neutron scattering. In both materials, dynamic nanoscale polaron correlat…
Rarely investigated pentacyanoferrate(III) building blocks, [Fe(CN)5(L)]2− (L = 1-methylimdazole (1–CH3im), imidazole (imH)), have been used to prepare cyanide-bridged bimetallic polymeric Mn(II)–Fe(III) complexes {[Mn(bpy)(H2O)2Fe(CN)5(1–CH3im)]·H2O}n (1), {[Mn(bpy)Fe(CN)5(imH)]·H2O}n (2) and {[Mn(CH3OH)2Fe(CN)5(imH)…
Abstract This study investigated the influence of montmorillonite (MMT) content on the mechanical/thermal properties of microcellular injection‐molded polylactide (PLA)/clay nanocomposites. Carbon dioxide was the blowing agent. The PLA/MMT nanocomposites were prepared by twin screw extrusion. The results showed that a…
The effects of weight fraction and length of short bamboo and glass fibers on flexural strength and inter-laminar shear strength (ILSS) of vinyl ester resin and unsaturated polyester (USP) resins were investigated. The bamboo fibers were isolated from the bamboo plant by treating them with dilute solution of sodium hy…
The Biological Macromolecular Crystallization Database (BMCD) has been a publicly available resource since 1988, providing a curated archive of information on crystal growth for proteins and other biological macromolecules. The BMCD content has recently been expanded to include 14 372 crystal entries. The resource con…
We present a detailed numerical study of dynamical heterogeneities in the aging regime of a simple binary Lennard-Jones glass former. For most waiting times t_{w} and final times t , both the dynamical susceptibility chi_{4}(t,t_{w}) and the dynamical correlation length xi_{4}(t,t_{w}) can be approximated as products…
Two macrocyclic ligands derived from H4dota containing three acetate pendant arms and one 2-methylpyridine-N-oxide coordinating unit were synthesized. The ligand H3do3apy(NO) (H3L1, 10-[(1-oxidopyridin-2-yl)methyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid) contains an unsubstituted pyridine-N-oxide ring; th…