Materials Literature
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Specific heat of barium titanate single crystals of different quality has been precisely measured with special attention to the temperature region above the ferroelectric phase transition. It was assumed that excess specific heat in the paraelectric phase has a fluctuation nature and the experimental data were analyze…
The paper presents a variant analysis of the structure of SOFC hybrid system. The systems are divided into two gropus: atmospheric and pressurized. The main parameter of such systems are indicated and commented. The comparison of various configurations is shown in a view of efficiency obtained. The ultra high efficien…
The mineral glauberite is one of many minerals formed in evaporite deposits. The mineral glauberite has been studied using a combination of scanning electron microscopy with energy dispersive X-ray analysis and infrared and Raman spectroscopy. Qualitative chemical analysis shows a homogeneous phase, composed by sulfur…
Background: Carbon nanotube (CNT) mediated drug delivery systems have recently aroused a great deal of interest. Such delivery systems for drugs, proteins and genes have been preliminarily studied using cellular and animal models. For further study of the related biological behaviours of CNTs in vivo, a fast and conve…
Detailed molecular dynamics simulations have been performed to explore the effect of guiding layer properties and errors on resulting directed self-assembly pattern properties produced in block copolymer (BCP) thin films. Guiding patterns that are noncommensurate to the natural BCP pitch are considered, as are guiding…
We fabricated indium nitride (InN) on porous silicon (PSi) on crystalline silicon [Si(100)] heterostructure photodetector via radio frequency sputtering. PSi layer was synthesised on n type Si(100) wafers via photoelectrochemical etching. Large area PSi, which comprised an array of voids, was used as an intermediate l…
The dendrimer molecules are spontaneously attached to the interface of liquid crystal microparticles dissolved in a glycerol matrix, forcing directors perpendicular to the interface. Photoisomerization reorients them from radial to tangential to the interface in the nematic, cholesteric and smectic A phases showing ch…
We report the catalytic oxidation of cyclohexane to CO and CO2 over size-selected palladium clusters (Pd N clusters, N = 10–120) supported on graphite as a function of cluster size. The stability of the pinned clusters (nanoparticles) under reaction conditions is investigated by scanning tunnelling microscopy measurem…
RbNaCaTh(Si 8 O 20 ), which crystallizes in the turkestanite structural type, was synthesized by a solid-phase reaction for the first time. The crystal structure of this compound was refined by the Rietveld method (space group P 4/ mcc ). The temperature dependence of the unit cell parameters was studied using high-te…
The partitioning of phosphorus between olivine and melt was measured by conducting partitioning experiments within the system Mg 2 SiO 4 -Ca 2 Al 2 Si 2 O 9 -NaAlSi 3 O 8 -Mg 3 (PO 4 ) 2 , using olivines crystallized with cooling rates in the range 1 to 10 °C/h. Partition coefficients, D P ol/melt , vary from 0.05 to…
By using first-principles calculations, we have systematically investigated the phase stability, magnetism and electron-filling behavior of vanadium-based inverse Heusler compounds. Our calculation results indicate that, due to the complex hybridization of the d orbitals for the vanadium atom, the electronic structure…
Abstract In order to reduce eye strain, a driving method for reducing flickers of liquid crystal display (LCD) is devised. For this driving, an oxide semiconductor (OS) is used in a backplane, liquid crystal and alignment layer materials are optimized, and a fringe field switching (FFS) mode with a structurally formed…
A novel homologous series α-4-[4′-n-Alkoxy benzoyloxy] benzoyl β-4″-methoxy phenyl ethylenes of 12 homologue substances is presented and comprises of 5 compounds (heptyl to tetradecyl) that exhibit both a smectic and a nematic phases. The pentyl, hexyl, and hexadecyl homologues only exhibit the nematic without exhibit…
Surface conductivity of ice was investigated during the development of AC and DC arcs on ice-covered insulators. To determine this parameter, an approach based on fluid mechanics combined with experimental measurements of the water film flow rate and conductivity was used. In particular, the variation of the thickness…
In recent years, HVDC cables have been greatly improved, 500kV XLPE DC cable has been developed, and many XLPE DC cables of lower applied voltage have been used in HVDC systems. However, there still is not a unified standard for testing high voltage DC extruded cable systems, only a recommendation. Furthermore the rec…
The stability of clay minerals is an important factor in assessing the durability of containment barriers for deep waste storage. In that context, the complete thermodynamic data set of three 2:1 ferro-magnesian clay minerals have been determined at 1 bar and from 2 to 520 K, using calorimetric methods. The studied cl…
Abstract The crystal structure of chalcoalumite, ideally Cu 2+ Al 4 (SO 4 )(OH) 12 (H 2 O) 3 , monoclinic, P 2 1 /n , Z = 4: a 10.228(3), b 8.929(3), c 17.098(6) Å, β 95.800(11)°, V 1553.6(1.5) Å 3 , has been refined to R 1 = 3.08% for 4,022 unique observed (4σ) reflections collected on a Bruker D8 three-circle diffra…
NADH:quinone oxidoreductase or complex I is a large membrane bound enzyme complex that has evolved from the combination of smaller functional building blocks. Intermediate size enzyme complexes exist in nature that comprise some, but not all of the protein subunits in full size 14-subunit complex I. The membrane spann…
Heusler alloy Co 2 FeAl (CFA) nanoparticles have been synthesized by reducing a mixture of the precursors: CoCl 2 ·6H 2 O, Fe(NO 3 ) 3 ·9H 2 O and AlCl 3 ·6H 2 O under H 2 atmosphere. XRD, SEM and TEM techniques have been used for the characterization of the prepared material. XRD and SAED data from TEM show the forma…
Highly disperse silicon carbide is synthesized using a hybrid method comprising the sol-gel step to provide the SiO 2 -C starting mixture involving the formation of a transparent gel and carbothermal synthesis under relatively soft conditions, namely, at temperatures of 1200–1500°C under a dynamic vacuum. The elementa…