Materials Literature
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We have performed the first-principles electronic structure calculation for the novel superconductor Ca 4 Al 2 O 6 Fe 2 As 2 which has the smallest a lattice parameter and the largest As height from the Fe plane among the Fe-As superconductors.We find that one of the hole-like Fermi surfaces is missing around the À po…
A series of non-symmetric liquid crystal compounds consisting of two different semi-rigid anisometric cores, namely 1,3,4-oxidiazole and biphenyl units, and two short terminal groups, have been synthesised in good yield. It has been shown by polarising optical microscopy and differential scanning calorimetry that all…
Abstract In this work, organically modified layered double hydroxides (OLDHs) were prepared and used to make exfoliated polystyrene (PS) nanocomposites by solvent blending method. First, Mg‐Al, Co‐Al, Ni‐Al, Cu‐Al, Cu‐Fe, and Cu‐Cr LDHs were synthesized by coprecipitation method at constant pH using their nitrate salt…
Poly(L-lactide) (PLLA)/single-walled carbon nanotubes (SWNTs) nanocomposite films were produced using the solvent casting method, and morphological, thermal and mechanical properties were investigated. Biocompatibility was evaluated by using human bone cells, performing adhesion and proliferation studies. The role of…
Abstract The effects of compatibility of tackifier with polymer matrix and mixing weight ratio of triblock/diblock copolymers as the matrix on the adhesion property and phase structure of tackifier‐added polystryrene triblock/diblock copolymer blends were investigated. For this purpose, polystyrene‐ block ‐polyisopren…
A facile route to water-soluble graphite nanoplatelets that uses graphite as the starting material is described. The method relies on the addition of phenyl radicals with subsequent sulfonation of the phenyl groups. Atomic force microscopy, high-resolution transmission electron microscopy, and scanning tunneling micro…
Abstract This article investigates the formation of nanostructured single crystals of calcite using direct, ion‐by‐ion precipitation methods and shows that single crystals with complex morphologies and curved surfaces can readily be formed using this technique. Calcite crystals with inverse opal and direct opal struct…
We discuss, with the aid of numerical calculations based on a Landau-de Gennes theory, the stabilization of a blue phase in chiral liquid crystals by introducing a guest component. Our argument is based on a common speculation that cores of disclination lines with higher free-energy density are replaced by the guest c…
The effect of weak particle anisotropy on the onset of fluidity in dense suspensions of glasses of repulsive, weakly attractive and strongly attractive spherical and dumbbell shaped particles is explored. Yield stresses are found to scale with volume fraction showing a divergence at random close packing for all system…
Two novel open-framework thioindate-thioantimonates [M(dap)3]InSb3S7 [M = Co(1), Ni (2); dap = 1,2-diaminopropane] have been solvothermally synthesized and structurally characterized. 1 and 2 consist of InS4 tetrahedra and SbS3(3-) trigonal pyramids, which are interconnected to form the first examples of three-dimensi…
Rare-earth doped oxyfluoride glasses and nanocrystalline glass ceramics have been prepared and studied by energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) aiming at investigating the structure and the symmetry of the nanocrystal as well as the site of the rare-earth ion. To solve the problem enco…
End-coupling between immiscible melts of two monofunctionalized polymers of a same length was modeled by dissipative particle dynamics starting from a flat interface and up to the formation of a mature lamellar microstructure. Influence of the reaction rate, chain length, and incompatibility of components on the kinet…
Abstract The photostabilization of poly(vinyl chloride) (PVC) films by 2 N ‐salicylidene‐5‐(substituted)‐1,3,4‐thiadiazole compounds was investigated. The PVC films containing concentration of complexes 0.5% by weight were produced by the casting method from tetrahydrofuran (THF) solvent. The photostabilization activi…
We report on a bistable light transmission through a planar metamaterial composed of a metal pattern of weakly asymmetric elements placed on a nonlinear substrate. Such structure bears the Fano-type sharp resonance response of a trapped-mode excitation. The feedback required for bistability is provided by the coupling…
The fabrication of layered nanomaterials, such as inorganic-inorganic, organic-inorganic, and bioinorganic nanohybrids has been demonstrated through controlled lattice engineering techniques including intercalation, exfoliation-reassembling, and pillaring reactions. Such a lattice engineering method gives rise to an a…
BACKGROUND AND AIMS: Calotropis procera and Calotropis gigantea, originally from warm parts of Africa and Asia, are now pan-tropical and in ecological terms considered an indicator of overgrazed, disturbed lands; they grow successfully in dry areas. Variations in water relations, morphology and photosynthesis of the t…
Crystallographic, magnetic, and Raman investigations of the mononuclear $[{\text{Fe}}^{\text{II}}(\text{Hpy-DAPP})]{({\text{BF}}_{4})}_{2}$ complex are presented. Its particular feature is a two-step thermal spin conversion in spite of a unique symmetry-independent iron site per unit cell. The plateau around 140 K is…
In the iron arsenide compound BaFe2As2, superconductivity can be induced either by a variation of its chemical composition, e.g., by replacing Fe with Co, or by a reduction of the unit-cell volume through the application of hydrostatic pressure p. In contrast to chemical substitutions, pressure is expected to introduc…
Online partial-discharge (PD) monitoring of medium-voltage power cables is traditionally performed on a cable between two consecutive ring main units (RMUs). PD location is achieved using a sensor at each cable end. Monitoring multiple consecutive cables, with RMUs in between, using a single monitoring system is more…
Abstract The aim of this study was to broaden the relatively small number of qualitative and quantitative data available on the endothelium of human blood vessels by scanning electron microscopy (SEM) imaging and computer based image analysis of the human endothelial microstructure and dimensions. Endothelium of the a…