Materials Literature
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The issue of the sustainability of energy supply has attracted worldwide concern given the rapid depletion of fossil energy sources amid increasingly worsening environmental pollution and the drive to develop alternative, environment-friendly, renewable energy sources and energy carriers to secure our energy supply an…
The transverse piezoelectric coefficient d31⋆ has been calculated for the six domain-engineered structures occurring in perovskite single crystals, using data for rhombohedral PMN-33PT [0.67Pb(Mg1∕3Nb2∕3)O3-0.33PbTiO3], orthorhombic potassium niobate (KNbO3), tetragonal barium titanate (BaTiO3), and tetragonal lead ti…
A donor-acceptor dyad system involving tetrathiafulvalene (TTF) as donor attached by a flexible spacer to perylene-3,4:9,10-bis(dicarboximide) (PDI) as acceptor was synthesized and characterized. The strategy used the preliminary synthesis of an unsymmetrical PDI unit bearing an alcohol functionality as anchor group.…
Experimental studies of actinide oxides are challenging, and conventional electronic structure calculations fail to qualitatively reproduce the scarce data. We employ a new generation of hybrid density functionals to model a defective plutonium dioxide lattice. The procedure is first tested against stoichiometric bulk…
The galvanic corrosion of magnesium alloy AZ91D coupled to a steel fastener was studied using a boundary element method (BEM) model and experimental measurements. The BEM model used the measured polarization curves as boundary conditions. The experimental program involved measuring the total corrosion rate as a functi…
We present a physically-based method to enforce contact angles at the intersection of fluid free surfaces and solid objects, allowing us to simulate a variety of small-scale fluid phenomena including water drops on surfaces. The heart of this technique is a virtual surface method, which modifies the level set distance…
Abstract The catalytic reforming of hydrocarbons in a microreformer is an attractive approach to supply hydrogen to fuel cells while avoiding storage and safety issues. High‐surface‐area catalyst supports must be stable above 800 °C to avoid catalyst coking; however, many porous materials lose their high surface areas…
Abstract A series of ionic stilbazolium salts with benzenesulfonates with different substituents in the para position have been synthesized. Single crystals of 4‐ N , N ‐dimethylamino‐4′‐ N ′‐methylstilbazolium p ‐methoxybenzenesulfonate (DSMOS) were successfully grown in methanol solution by slow cooling. X‐ray studi…
Much research in tissue engineering focuses on the synthesis of complex three-dimensional polymer scaffolds containing functional biomolecules to which cells are introduced. Typical scaffolds for skin tissue engineering are macroscopically porous with struts or fibers approximately 10 microm thick at a packing fractio…
This review summarizes the findings of recent applications of time-domain far-field photothermal (PT) technique to the detection and imaging of nanoscale absorbing particles. This two-beam (pump-probe) technique is based on time-resolved PT visualization of laser-induced thermal effects around nanoparticles. Imaging i…
Phase diagrams of multi‐wall carbon nanotube (MWNT)/nematic liquid crystal (E7) and buckminsterfullerene (C60‐I h)/nematic liquid crystal (E7) binary systems have been investigated by means of polarizing optical microscopy and differential scanning calorimetry. It was found that the isotropic–nematic phase transition…
Many experiments on the mechanics of nanostructures require the creation of rigid clamps at specific locations. In this work, electron-beam-induced deposition (EBID) has been used to deposit carbon films that are similar to those that have recently been used for clamping nanostructures. The film deposition rate was ac…
The twinning-mediated growth of Al2O3 nanobelts (see Figure) is successfully achieved by simple thermal evaporation. The as-synthesized Al2O3 nanobelts are composed of deformation twins along their entire length. The particular structures of these Al2O3 nanobelts apparently mimic those of plants such as bamboo, and th…
The magnetic, transport, and magnetotransport properties of ${\mathrm{Mn}}_{3+x}{\mathrm{Sn}}_{1\ensuremath{-}x}\mathrm{C}$ $(0\ensuremath{\leqslant}x\ensuremath{\leqslant}0.4)$ and ${\mathrm{Mn}}_{3}{\mathrm{Zn}}_{y}{\mathrm{Sn}}_{1\ensuremath{-}y}\mathrm{C}$ $(0\ensuremath{\leqslant}y\ensuremath{\leqslant}0.9)$ comp…
Abstract The recent developments in the vulcanization of elastomers, major types of crosslinking, and mechanism of crosslinking have been reviewed. Attention has been made to sum up the accelerated vulcanization. Possible mechanisms by which the reaction is taking place are discussed. The role of accelerators, activat…
Monolayer arrays of polystyrene−poly(2-vinylpyridine) diblock copolymer cylinders with excellent orientational order and a very low density of dislocations are prepared by cooling slowly from above the bulk order−disorder temperature (ODT) ∼212 °C within silicon oxide channels one cylinder spacing a in depth and 2 μm…
Approaching reality: Copper zinc oxide catalysts that were prepared similarly to industrial catalysts were studied by high-resolution electron microscopy. The microstructure of the Cu/ZnO catalysts (see picture) deviates considerably from that of idealized copper model systems. Future model systems for copper catalyst…
The crystal chemical analysis of the class of borates has been carried out using the extended Dornberger-Schiff order–disorder (OD) theory based on the recognition of building blocks of various dimensions. All of the borate structures are built from several fundamental building blocks typical for every group of hexa-,…
We investigate the role of the diffuse layer of the ionic cloud on impedance spectroscopy measurements. The analysis is performed assuming that the ions have equal mobility, the electrodes are perfectly blocking and adsorption phenomenon can be neglected. We find that the dielectric permittivity, in the limit of high…
A unique "single-chain quantum magnet" was formed by an alternating arrangement of high-spin FeII/low-spin FeIII ions. Although the predominant spin-carrier components (high-spin FeII) possess easy-plane magnetic anisotropy (D > 0), twisted arrangement of easy-planes along the chain axis defines a novel class of one-d…