Materials Literature
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The Czochralski growth of Dy 3+ -doped (Lu 1− x Gd x ) 2 SiO 5 solid solution single crystals with different mixtures of Lu 2 SiO 5 and Gd 2 SiO 5 oxides ( x = 0, 0.2, 0.4, 0.6, 0.8, and 1) is reported. It was found that the (Lu 1− x Gd x ) 2 SiO 5 crystals retain structural, physical, and optical properties of Lu 2 S…
Carbonized and activated textile acrylic fibers and melamine foams are tested as catalysts for the wet air oxidation of aniline. The use of carbon materials prepared from foams and fibers enriched with nitrogen improves the rate of aniline removal. Among all the prepared materials, a fiber carbonized at 850°C and acti…
Two novel tetranuclear, star-shaped iron(III) clusters, [Fe(4)(acac)(6)(Br-mp)(2)] and [Fe(III) (4)(acac)(6)(tmp)(2)], are described. Both have S=5 ground states resulting from antiferromagnetic nearest-neighbour superexchange interactions, with J=-8.2 cm(-1) and J=-8.5 cm(-1) for 1 and 2, respectively. Energy barrier…
The lattice dynamics and the effect of pressure on superconducting LiFeAs in both nonmagnetic (NM) and striped antiferromagnetic (SAF) phases are investigated using the plane-wave pseudopotential, density-functional-based method. While the obtained electron-phonon coupling $\ensuremath{\lambda}$ is very small for the…
Abstract We report on the pseudo‐capacitance induced by a nitrogen substituted in the carbon network composite prepared by a simple carbonisation (750 °C) of formaldehyde and melamine in the presence of carbon nanotubes. Nitrogen content in the composites varied from 7.4 to 21.7 wt.%. Such materials have a higher dens…
Polyetheretherketone (PEEK), an attractive matrix for highly loaded parts in terms of temperature and mechanical performance, is applied in many engineering applications. However, its improvement in the mechanical properties by, for example, nanoparticles is sometimes necessary to fulfill actual requirements. In this…
Recent infrared measurements of phonon peaks in gated bilayer graphene reveal two striking signatures of electron-phonon interaction: an asymmetric Fano lineshape and a giant variation in the peak intensity as a function of the applied gate voltage. In this Rapid Communication we provide a unified theoretical framewor…
Polymer hydrogel capsules comprised of poly(methacrylic acid) chains and cross-linked via disulfide linkages were investigated for their cytotoxicity and mechanism of internalization in a variety of mammalian cells. The capsules were internalized by all the tested cell lines which differed in their morphology and func…
Abstract For investigating the direct applicability of highly active cobalt containing cathodes on YSZ electrolytes at a lower processing and operating temperature range ( T ≤ 650 °C), we fabricated a thin film lanthanum strontium cobalt oxide (LSC) cathode on an yttria stabilised zirconia (YSZ)‐based solid oxide fuel…
Abstract This article presents a model‐based control approach for optimal operation of a seeded fed‐batch evaporative crystallizer. Various direct optimization strategies, namely, single shooting, multiple shooting, and simultaneous strategies, are used to examine real‐time implementation of the control approach on a…
Abstract In the present research program, chitosan has been mixed with polycaprolactone (PCL) (80 : 20) for using them for control delivery of doxycycline. Organoclay, Cloisite 30B of different concentrations 1, 2.5, and 5% has been blended with the composite. Chitosan is a natural biodegradable polymer where as polyc…
In this paper we report the synthesis of two new complexes, [Eu(fod)(3)(phen)] and [Tb(fod)(3)(phen)] (fod = 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octadionate and phen = 1,10-phenanthroline), and their complete characterization, including single-crystal X-ray diffraction, UV-vis spectroscopy, IR spectroscopy, and…
This study evaluated physical and mechanical properties of the wood plastic composite panels made from dry-blended rubberwood fiber-polypropylene (PP) powder formulations using a conventional flat-press process under laboratory conditions. Three levels of rubberwood fibers (Hevea brasiliensis), 40%, 50%, and 60% based…
We investigated the athermal high-pressure behavior of the elastic properties of SrTiO 3 (STO) up to 26 GPa in cubic, tetragonal and orthorhombic phases using the ab initio pseudo-potential method. Our results for the cubic phase are in good agreement with experiment and previous pseudo-potential calculations. There a…
The use of TLS (translation/libration/screw) models to describe anisotropic displacement of atoms within a protein crystal structure has become increasingly common. These models may be used purely as an improved methodology for crystallographic refinement or as the basis for analyzing inter-domain and other large-scal…
Ultrastructural alterations of fresh wood caused by initial drying were compared to changes incurred during drying of never-dried wood pulp fibers of different macromolecular composition. Drying induced inaccessibility of a native wood sample exhibited remarkable similarity to wood pulp samples of different lignin con…
Here we report a scalable bottom-up technology for creating three-dimensionally highly ordered macroporous polymer films with excellent water-repelling and optical diffractive properties. A simple doctor blade coating process is first utilized to create silica colloidal crystal-polymer nanocomposites. The close-packed…
Abstract Hybrid organic‐inorganic glasses exhibit unique electro‐optical properties along with excellent thermal stability. Their inherently mechanically fragile nature, however, which derives from the oxide component of the hybrid glass network together with the presence of terminal groups that reduce network connect…
We report on band-dependent quasiparticle dynamics in Ba(0.6)K(0.4)Fe2As2 (Tc=37 K) measured using ultrafast pump-probe spectroscopy. In the superconducting state, we observe two distinct relaxation processes: a fast component whose decay rate increases linearly with excitation density and a slow component with an exc…
Crystallization behavior of calcium carbonate (CaCO 3 ) in water/ethanol mixed solutions under ambient conditions using polystyrene sulfonate (PSS) as a crystal growth modifier has been systematically investigated. The results have demonstrated that a switch from thermodynamic control to kinetic control in the crystal…