Materials Literature
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We have used numerical methods to investigate the concentration profile of bismuth atoms during liquid phase epitaxial growth of InSbBi and GaSbBi. The one-dimensional diffusive model has been used to study the transport of bismuth atoms at equally spaced layers in the proximity of the epitaxial interface growing unde…
Astrocytes support structure of central nervous system (CNS) and provide nutrients to neurons. When CNS is injured, astrocytes are activated and produce glia scar. There are debates if the reactive astrocytes give beneficial or harmful effects on neuronal regeneration. In vitro tissue culture systems successfully have…
The electronic structures of $R$ $4f$ and Fe $3d$ states of $R$Fe${}_{2}$O${}_{4}$ ($R=\text{Er}$, Tm, Lu) have been investigated by employing soft x-ray absorption spectroscopy (XAS) and magnetic circular dichroism at the Fe $2p$ and $R$ $3d$ absorption edges. It is found that the valence states of Fe and $R$ ions ar…
${}^{139}$La NMR and relaxation measurements have been performed on La${}_{1.8\ensuremath{-}x}$Eu${}_{0.2}$Sr${}_{x}$CuO${}_{4}$ ($x=0.13$ and 0.2) single crystals. The temperature dependence of the ${}^{139}$La NMR spectra in all the structural phases [high-temperature tetragonal (HTT) $\ensuremath{\rightarrow}$ low-…
We report longitudinal magnetoresistance of 50 nm wide FePt and 2 μm wide CoPt wires with perpendicular anisotropy. In addition to magnon and domain wall magnetoresistances, which are symmetric in field, there appears an asymmetrical voltage signal due to the extraordinary Hall effect, usually understood as the effect…
Abstract In this work microgel‐PVA composite fibres are prepared by means of an electrospinning process using aqueous solutions of poly(vinyl alcohol) (PVA) and poly(N‐vinylcaprolactam)‐based microgels. The optimal parameters are defined to fabricate homogenous composite fibres in which the microgels are embedded into…
We treat electronic dynamics at surfaces of nanostructured semiconductors induced by absorption of visible light using reduced density matrices and properties obtained from ab initio electronic structure calculations, to focus on two non-adiabatic phenomena: (a) how active electrons interacting non-adiabatically with…
Weaving technique offers a large potential for the highly productive manufacture of woven 3D-preform structures in lightweight applications. This research work reports on the technological modification to the construction of a double-rapier weaving machine for the low damage production of double-walled shell structure…
We study the temperature dependence of time-resolved photoluminescence (PL) in closely packed alignment of Si nanodisks (NDs) with SiC barriers, fabricated by neutral beam etching using bio-nano-templates. The PL time profile indicates three decaying components with different decay times. The PL intensities in the two…
Polypyrrole (PPy) was successfully prepared by chemical oxidation in various anionic surfactant solvents and an interesting regulation of the molar ratio of the oxidant and the monomer was firstly discovered which was closely related to the conductivity of the PPy when the molar ratio of the anionic surfactant to the…
In this work, the pulsed photoacoustic technique was used to investigate the semiconductor-metal transition of thin vanadium pentoxide films (V2O5) under increasing temperature. The V2O5 thin films were simultaneously deposited by RF magnetron sputtering at room temperature, on corning glass and SnO2:F/glass substrate…
We show that the slowing-down of diffusion-limited reaction rates in dense liquids can be explained in terms of an effective two-body Smoluchowski framework where many-body correlations are accounted for by means of a nonequilibrium mean-force field. This framework explains recent observations from numerical simulatio…
Abstract Lead carbonate chloride, Pb 2 CO 3 Cl 2 , known as mineral phosgenite, is introduced as a novel SRS‐active carbonate crystal with tetragonal symmetry. Under picosecond one‐micron laser pumping Raman‐induced χ (3) ‐nonlinear generation in the near‐IR is observed. All recorded high‐order Stokes and anti‐Stokes…
In the title compound, C16H12N2O2·0.5CH3OH, the H atom of the -OH group has been transfered to the N atom in the azo group, forming a zwitterion. Hence, there is an intra-molecular N-H⋯O, rather than an O-H⋯N, hydrogen bond in the mol-ecule. The mol-ecule is almost planar, the dihedral angle between the benzene ring a…
High-silica zeolites of ZSM-5 structural type were synthesized using various structure-forming additives and without them. Mo-containing catalytic systems were prepared on the basis of these zeolites. Their physicochemical properties and activity in the course of the nonoxidative conversion of methane were studied. Th…
In the title compound, [Ni(C5H4N3O2)2(H2O)2]·2H2O, the Ni(II) ion lies on an inversion center and is coordinated in an slightly distorted octa-hedral environment by two N,O-chelating 3-amino-pyrazine-2-carboxyl-ate (APZC) ligands in the equatorial plane and two trans-axial aqua ligands. In the crystal, O-H⋯O, N-H⋯O an…
Abstract The evaluation of a new azacrown ether ligand bis{[3‐(pyridin‐4‐yl)‐1H‐pyrazol‐1‐yl]methyl}diaza‐18‐crown‐6 (b3pd), which contains pendant p‐pyridylpyrazole arms connected by diaminomethane linkers, identified a tendency to undergo retro‐Mannich fragmentation in the presence of transition‐metal ions. However,…
Aseptic loosening of joint prosthetics is one of the most frequent reasons for the failure of total joint replacement surgeries. A major cause of the aseptic loosening is osteolysis caused by a periprosthetic inflammatory response to wear particles released from implanted prosthetics. Tumor necrosis factor (TNF)-α is…
Phase retrieval is one of the classical problems in various fields of physics including x-ray crystallography, astronomy and spectroscopy. It arises when only an amplitude measurement on electric field can be made while both amplitude and phase of the field are needed for obtaining the desired material properties. In…
We report a comprehensive study of γ-irradiation on optical, electrical, and laser characteristics of pure and transition-metal doped single and polycrystalline ZnS and ZnSe. Polished pure, Cr-doped, and Ag, Au, Cu, Al, In, and Mn co-doped ZnS and ZnSe crystals after absorption and electro-conductivity characterizatio…