Materials Literature
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<div class="section abstract"> SAE J2464, “Electric and Hybrid Electric Vehicle Rechargeable Energy Storage System (RESS) Safety and Abuse Testing” is one of the premier testing manuals for vehicle battery abuse in North America and the world. Abuse testing is performed to characterize the response of a Recharge…
The motion of dielectric microparticles induced by external ac electric field, E, was investigated in the cell with in-plane stripe electrodes and filled with homeotropically aligned nematic liquid crystal. It was demonstrated that the average velocity of the microparticles depended on the third power of the electric…
An innovative method is presented to estimate the size effect on the ferroelectric phase transitions in the barium titanate ceramic system. The method is based on the phenomenological thermodynamic theory with additional stress led by surface bond contraction. Two symmetry‐breaking factors are introduced to correct th…
We report a numerical investigation of the crystallization of monodisperse hard spheres on different patterned substrates. We find that the duration of a metastable fluid state, which may last for relatively long time in the homogeneous crystallization, can be deeply reduced or almost eliminated when a substrate is us…
Phase structure, microstructure, and microwave dielectric properties of Ba 0.4 Sr 0.6 TiO 3 –Mg 3 B 2 O 6 composite ceramics fabricated by solid‐state reaction were investigated. The results show that the composite ceramics sintered at only 1100°C exhibited promising microwave properties. The dielectric constant can b…
EGR has been proven to reduce NOx emissions from diesel engines significantly and is nowadays widely used in production engines. To reach future emission legislation standards, alternative EGR-rout ...
The chemical interaction and phase relations in the B-BN system have been in situ studied at 5 GPa and temperatures up to 2800 K using X-ray diffraction with synchrotron radiation. The thermodynamic analysis of the B-BN system based on experimental data allowed us to construct equilibrium and metastable phase diagrams…
The preparation, characterization, and in vitro release of 5-aminosalicylic acid (5-ASA) from methacrylic acid (MAA)/perlite composites (APC) prepared via a sol-gel route are reported. The free-radical graft polymerization of methacrylic acid (MAA) onto perlite particles was studied experimentally. The grafting proced…
SiO(2)/polystyrene colloidal supraparticles were synthesized through dispersion polymerization by using poly(N-vinylpyrrolidone) as stabilizer, in the presence of silica particles coated with methacryloxymethyltriethoxysilane. Scanning and transmission electron microscopy studies indicate that dumbbell-like or snowman…
Temperature-dependent photoluminescence characteristics of non-polar m-plane ZnO and ZnMgO alloy films grown by metal organic chemical vapor deposition have been studied. The enhancement in emission intensity caused by localized excitons in m-plane ZnMgO alloy films was directly observed and it can be further improved…
Electronic structures of hole-doped transition metal cyanides, Na 0.84- x Co[Fe(CN) 6 ] 0.71 ·3.8H 2 O (NCF71), Na 0.72- x Ni[Fe(CN) 6 ] 0.68 ·5.1H 2 O (NNF68) and Na 1.60- x Co[Fe(CN) 6 ] 0.90 ·2.9H 2 O (NCF90), were investigated by means of the x-ray absorption spectroscopy and the valence differential spectroscopy.…
<div class="section abstract"><div class="htmlview paragraph">Selective catalytic reduction (SCR) of oxides of nitrogen with ammonia gas is a key technology that is being favored to meet stringent NOx emission standards across the world. Typically, in this technology, a liquid mixture of urea and water - k…
Magnetic and structural phase diagram in a spinel-type solid solution system Fe(1-x)Mn(x)Cr(2)O(4) has been investigated. The cubic-to-tetragonal transition temperature T(s 1) is gradually reduced by the substitution of Mn(2+) (3d(5)) for Jahn-Teller-active Fe(2+) (3d(6)) ions, implying the long-range nature of the fe…
A simple technique appropriate for introductory materials science courses is outlined for the calculation of bond energies in metals from lattice energies. The approach is applied to body-centered cubic (bcc), face-centered cubic (fcc), and hexagonal-closest-packed (hcp) metals. The strength of these bonds is tabulate…
Neutron-diffraction and high-resolution x-ray diffraction studies find that, similar to the closely related underdoped $\text{Ba}{({\text{Fe}}_{1\ensuremath{-}x}{\text{Co}}_{x})}_{2}{\text{As}}_{2}$ superconducting compounds, $\text{Ba}{({\text{Fe}}_{0.961}{\text{Rh}}_{0.039})}_{2}{\text{As}}_{2}$ shows strong evidenc…
The spatial coexistence of magnetic and ferroelectric domains in multiferroic BiFe0.96Co0.04O3 film is confirmed by multimode scanning probe microscopy. The applied bias dependence of the surface potential in BiFe0.96Co0.04O3 indicates that surface potential is determined by the interplay of polarization and surface c…
Lasergesteuerte Nanobombe: Supramolekulare Goldnanopartikel (Au-SNPs) mit vorgegebener Größe wurden aus 2 nm großen Goldkolloiden durch Selbstorganisation hergestellt. Diese Au-SNPs zeigten deutlich stärkere photothermische Effekte und ermöglichten nach dem Einbau zielspezifischer Liganden die selektive Zerstörung von…
Characteristic dimensions of carbon nanoscrolls---``buckyrolls''---are calculated by analyzing the competition between elastic, van der Waals, and electrostatic energies for representative models of suspended and substrate-deposited graphene samples. The results are consistent with both atomistic simulations and exper…
The aim of this research was to investigate the cause of the severe localised corrosion that sometimes occurs at welds in carbon steel pipelines carrying hydrocarbons and inhibited brines saturated with carbon dioxide. A rotating cylinder electrode apparatus was designed so that electrodes machined from the weld metal…
Abstract A technique for structural analysis of transformer cores in terms of magnetostriction is proposed. The magnetic flux density of each element is first calculated by the finite element method (FEM). Then the magnetostrictive force on each element is calculated from measurements. The magnetostriction is specifie…