Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The bidirectionally coupled magnetoelastic model (BCMEM) developed by Mudivarthi et al (2008 Smart Mater. Struct. 17 035005) has been extended to include electric currents in its magnetic finite element formulation. This enables the model to capture the magnetoelastic behavior of magnetostrictive materials subjected t…
In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used…
This study details the synthesis and characterization of novel porous composites of low density polyethylene (PE) and multiwalled carbon nanotubes (MWNT). PE–MWNT composites were prepared by melt blending the components in a twin screw compounder and porous structures were produced by a batch technique using CO2 as th…
Recently reported inverse isotope effect is investigated on the basis of the two-band and two-channel attractive model by using the weak coupling Bardeen–Cooper–Schrieffer (BCS) scheme. If we assume the several attractive or repulsive interactions for Cooper pairs, which works in different energy ranges, the isotope e…
Addressing global dimensionsNo efforts have been undertaken as yet to create a formal, treaty-based, international framework for nanomaterials regulation.Our research suggests little if any interest in pursuing the more ambitious objective of creating an international treaty on nanomaterials regulation.The political e…
Abstract The synthesis, characterization, and structure–property behavior of polyurethanes containing polyisobutylene (PIB)/poly(tetramethylene oxide) (PTMO) soft co‐segments and bis(4‐isocyanatocyclohexyl)methane (HMDI)/hexanediol (HDO) hard segments is presented. The mechanical (stress/strain, hardness, and hysteres…
The pressure dependence of superconducting transition temperature $T_{\rm c}$ has been investigated through the DC magnetic measurements for FeSe$_{0.8}$ and FeSe$_{1.0}$. For both samples, with increasing pressure $P$, the $T_{\rm c}$$-$$P$ curve exhibits a two-step increase, showing a local maximum of $\sim$11 K at…
Electronic relaxation and interparticle electromagnetic coupling processes in hollow gold nanospheres (HGNs) and HGN aggregates are described. These plasmon-tunable HGNs exhibit an unexpected, but systematic, blue shift of the surface plasmon resonance spectral position when the particles are aggregated. Femtosecond t…
The weak-field Hall conductivity is calculated in monolayer graphene within a self-consistent Born approximation. The Hall conductivity sufficiently away from the Dirac point exhibits the dependence qualitatively in agreement with the Boltzmann result, but it deviates in the region near zero energy, the width of which…
We provide direct evidence for successive exchange of D atoms in the isotopically pure ${\text{BH}}_{4}^{\ensuremath{-}}$ units of the crystalline solid lithium borohydride. We prove the coexistence of all ${\text{BH}}_{4\ensuremath{-}n}{\text{D}}_{n}^{\ensuremath{-}}$ $(0\ensuremath{\le}n\ensuremath{\le}4)$ units in…
The highly active (La 0.9 K 0.1 CoO 3 ) x /nmCeO 2 catalysts consisting of comparably sized La 0.9 K 0.1 CoO 3 active component and CeO 2 support nanoparticle were studied on the catalytic combustion of soot by temperature-programmed oxidation (TPO) technique. The properties of oxygen species and the redox performance…
A rigorous theory of liquid-crystal transitions is developed starting from the Liouville equation. The starting point is an all-atom description and a set of order-parameter field variables that are shown to evolve slowly via Newton's equations. The separation of time scales between that of atomic collision or vibrati…
We review the theoretical research on the influence of disorder on structure and phase behavior of condensed matter system exhibiting continuous symmetry breaking focusing on liquid crystal phase transitions. We discuss the main properties of liquid crystals as adequate systems in which several open questions with res…
Effect of porosity on grain growth is both the most frequent and technologically important situation encountered in ceramic materials. Generally this effect occurs during sintering, however, for nuclear fuels it also becomes very important under reactor irradiation conditions. In these cases pores and gas bubbles atta…
Abstract This article describes an investigation into the effects of foaming on the electrical conductivity for a carbon‐filled cyclic olefin copolymer (COC) composite incorporating both chopped carbon fibers (cCF) and carbon black (CB). Foamed and solid samples were injection molded and then analyzed for cell size, f…
Abstract In this study, the properties of polypropylene (PP) homocomposites, prepared by film‐stacking followed by hot pressing, were investigated. Alpha‐ and beta‐PP served as matrices, whereas highly oriented PP tapes of the alpha form acted as reinforcement in the homocomposites. Tapes with different draw ratios (D…
Abstract The mainstay of this description is a modeling of “controlled/living” chain growth crosslinking copolymerization (C/L CC) that is based on a simple equivalent kinetic scheme, resulting from assumptions consistent with an ideal C/L behavior. Analytical expressions of the double bond concentration according to…
The bioconjugation of proteins and peptides with synthetic polymers is a promising method for tailoring the chemical, biological, and physical properties of both the polymeric and protein-based components. Here, we describe macromolecular assemblies of polyethylene glycol-coiled-coil alternating multiblock polymers gu…
A method was developed for utilizing block copolymers that combine an acidic block, 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA), and an acrylate block, n -butyl, ethyl, or methyl acrylate, as templates for acid-doped conducting polymers such as polyaniline (PANI) or polypyrrole (PPY). PANI templated with dibl…
The recently synthesized diamondlike ${\text{BC}}_{5}$ $(d{\text{-BC}}_{5})$ was shown to own a few interesting physical properties, which are yet to be confirmed due to the difficulty in the synthesis of adequately sized single crystals. Our density functional calculations not only confirm $d{\text{-BC}}_{5}$ to be a…