Materials Literature
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An effective interatomic interaction potential for SiC is proposed. The potential consists of two-body and three-body covalent interactions. The two-body potential includes steric repulsions due to atomic sizes, Coulomb interactions resulting from charge transfer between atoms, charge-induced dipole-interactions due t…
A new type of fluorescence sensory material has been developed from an alkoxycarbonyl-substituted carbazole-cornered tetracycle. Films fabricated from such materials are shown to be efficient in detecting explosive vapor, probably owing to the extended 1D molecular stacking between the component molecules and intrinsi…
High Resolution Image Download MS PowerPoint Slide The chemical reaction between [Au 11 (PPh 3 ) 8 Cl 2 ] + and n -alkanethiol C n H 2 n +1 SH ( n = 2, 8, 10, 12, 14, 16, and 18) serendipitously yielded stable Au 25 cluster compounds with the formula, [Au 25 (PPh 3 ) 10 (SC n H 2 n +1 ) 5 Cl 2 ] 2+ . Single-crystal X-…
IL MILIONE is a suite of computer programs devoted to protein crystal structure determination by X-ray crystallography. It may be used in the following key activities. ( a ) Ab initio phasing, via Patterson or direct methods. The program may succeed even with structures with up to 6000 non-H atoms in the asymmetric un…
Abstract Thermal spray processes represent a cost effective and flexible method for the production of functional coatings by using metallurgical, ceramic and cermet materials. Due to the high kinetic energy of the impinging particles, the HVOF (High Velocity Oxygen Fuel) technique is able to produce extremely dense co…
Leakage current characteristics of Pt/Ba0.6Sr0.4TiO3/Pt ferroelectric thin-film capacitors were investigated at the temperature range from 273 K to 393 K. It is implied that there are two conduction regions in the capacitors, i.e. ohmic behavior at low voltage (< 0.4 V) and Poole-Frenkel or Schottky emission mechanism…
In this paper we review our recent studies on the structure, morphology and interface chemistry of different metal systems on simple rock-salt oxides, providing a basis for the understanding of their properties. Fe on both MgO and NiO grows in the cubic structure with the and orientation. The Fe/MgO interface is sharp…
Polycrystalline NaCo 2 O 4−δ materials were prepared using the solid‐state reaction technique. The processing dependence of texturing evolution of NaCo 2 O 4−δ was investigated quantitatively. The results indicate that the extent of texture increased with increasing process duration and then reached the maximum when t…
Abstract Silica films on glass substrates with homogeneously dispersed platinum, gold or silver nanoparticles were prepared by sol‐gel processing mixtures of tetraethoxysilane and {3‐[(2‐aminoethyl)amino]propyl}triethoxysilane complexes of the corresponding metal ions, followed by dip‐coating and hydrogen treatment of…
Using a solid electrolyte RbCu4Cl3I2 thin film and a controlled constant current electric field, the authors have directly fabricated macroscopic-long Cu nanowire bundles. Their structural characters have been described at different scales. The oxidation behavior of macroscopic-long Cu nanowire bundles containing thou…
Abstract Densely packed zirconium tungstate blocks were synthesized by rapid solidification with a CO 2 laser. The structure and phase transition properties of the samples were studied by Raman spectroscopy and X‐ray diffraction. Raman spectroscopic study reveals that zirconium tungstate solidifies with an orthorhombi…
Layered organic/inorganic hybrid thin film, which consist of MoO3 with poly(o-anisidine) (PoANIS), were investigated by X-ray diffraction (XRD) analysis, field-emission scanning electron microscopy...
We analyse the aging dynamics of the one-dimensional Fredrickson-Andersen (FA) model in the nonequilibrium regime following a low temperature quench. Relaxation then effectively proceeds via diffusion limited pair coagulation (DLPC) of mobility excitations. By employing a familiar stochastic similarity transformation,…
The molten salt synthesis (MSS) method is utilized to synthesize the anisotropic platelet Sr 3 Ti 2 O 7 (S3T2) single‐crystal particles. The aim of this study is to identify the essence of platelet Sr 3 Ti 2 O 7 crystal growth and guide the synthesis of anisotropic platelet SrTiO 3 crystals as well as various technolo…
The authors study experimentally both transmission and reflection of microwave radiation from metamaterial superlattices created by layers of periodically arranged wires and split-ring resonators. The authors measure the dependence of the metamaterial resonance on the spatial period of the superlattice and demonstrate…
The authors have investigated the charge transport properties across heterostructures built from a SrRuO3 bottom electrode, a Cr-doped SrZrO3 perovskite film, and different top electrode metals (Pt, Cu, Ag, Cr, Mg, and SrRuO3). The resistances of such junctions were dependent on the top metal and ranging between 1 and…
The authors show that an elastic tube model of a (5,5) carbon nanotube predicts stretching and bending moduli that differ by 19%. This is due to (1) differing energy storage mechanisms in each mode and (2) the inability of the tube model to capture these effects. Conventional tube models assume a common energy storage…
Bacillus cereus is an opportunistic pathogenic bacterium closely related to Bacillus anthracis, the causative agent of anthrax in mammals. A significant portion of the B. cereus chromosomal genes are common to B. anthracis, including genes which in B. anthracis code for putative virulence and surface proteins. B. cere…
Thin films of BaZr0.25Ti0.75O3 in which Ba2 + is partially substituted by Ca2 + are prepared by a sol-gel method. Phases and dielectric properties of the films are studied.The crystal structure of BaZr0.25Ti0.75O3 is cubic and does not change with Ca substitution upto x = 0.25 in Ba1-xCaxZr0.25Ti0.75O3. A change from…
Abstract New azophenol polymers (P 1 , P 2 and P 3 ) were synthesised by the oxidative polycondensation (OP) reaction of three different azophenol monomers in aqueous alkaline medium with NaOCl as the oxidant. The monomers and the polymers were characterised by elemental analyses, and UV‐visible, Fourier transform inf…