Materials Literature
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Bisbenzylidene cycloalkanone [BBCA], a versatile photo-active molecule, has already shown its potential for applications in biology, chemistry, materials science and technology. The molecule possesses the dual nature of a photo-active molecule and a mesogenic unit. It was studied as such for medical applications and b…
To understand the coercivity mechanism of Nd-Fe-B sintered magnets, the microstructure of grain boundary composed of Nd2Fe14B and Nd-rich phases has been studied. However, the influence of Nd-rich phase, which contains some amount of oxygen, on microstructure and coercivity has not been clear. In this study, the influ…
Ferromagnetic Resonance (FMR) studies were carried out as a function of orientation and temperature on RF-sputtered nanocrystalline thin films of ZnFe 2 O 4 having saturation magnetization (M S ) of 230 emu/c.c. The in-plane FMR linewidth (ΔH) increases and the resonance field (H R ) decreases with decrease in tempera…
The fabrication of nanotube arrays (TNTs) by the anodization of titanium foil in electrolyte containing fluoride was carried out in this study. The surface dimension, phase formation, and lattice parameters of TNTs were determined by the field-emission-scanning electron microscopy and X-ray diffractometer, respectivel…
To fabricate n-ZnO nanorod/p-GaN-heterostructured light emitting diodes, well-aligned ZnO nanorod arrays were synthesized on metallorganic chemical vapor deposited p-GaN layers on sapphire substrates using low temperature and low cost solution growth techniques. Current–voltage measurements showed the formation of a d…
The emission properties of 2 µm region fluorescence of Tm3+-Ho3+ co-doped tellurite glasses are investigated. Introducing F- ions to the composition of tellurite glasses plays a positive effect on the 2 µm emission. A maximum intensity of 2 µm emission is achieved when 1.5-mol% Tm2O3 and 1-mol% Ho2O3 concentration are…
An improved reactive transport model of a metallorganic chemical vapor deposition process for the growth of aluminum films from dimethylethylamine alane is developed. The computational fluid dynamics model is built under PHOENICS software for the simulation of the coupled fluid flow, heat transfer, and chemistry. The…
The time curves of full polarization resistance of Ni cermet electrode modified with CeO 2 − δ additive were studied by means of impedance spectroscopy in binary gas mixtures x % H 2 + (100 − x )% H 2 O, 10% CO + 90% CO 2 and multicomponent gas mixtures H 2 + CO 2 + H 2 O + CO + Ar of various composition at the temper…
Oligothiophenes (TFs) with blue, green and orange emission have been used for the first time as doping fluorophores of silica nanoparticles (SiO2NPs). High purification of the new nanoparticles (TFsSiO2NPs) from free molecular fluorophores was achieved by means of asymmetrical flow field-flow fractionation on-line com…
The screw propeller-like cluster complex [Mn(3)(OMe)(L(Schiff))(3)(H(2)O)Cl(2)].2H(2)O {H(2)L(Schiff) = 2-[(E)-(R)-1-hydroxypropan-2-ylimino]methyl-6-methoxyphenol} is the first chiral triangle manganese cluster compound. It is also a rare nonsymmetrical triangle compound with an unequilateral arrangement of three man…
Low Resistivity ITO Thin Films Deposited by NCD Technique at Low Temperature: Variation of Tin Concentration, Pammi, S. V., Chanda, Anupama, Ahn, Jun-Ku, Park, Jong-Hyun, Cho, Chae-Ryong, Lee, Won-Jae, Yoon, Soon-Gil
A new protein micro‐crystallography beamline BL32XU at SPring‐8 is under construction and scheduled to start operation in 2010. The beamline is designed to provide the stabilized and brilliant micro‐beam to collect high‐quality data from micro‐crystals. The beamline consists of a hybrid in‐vacuum undulator, a liquid‐n…
By using the first principle band calculations, we identified that Si2Ti-type Al-Mn-Si C54-phase possesses an electronic structure suitable for the thermoelectric materials. The formation range of the Al-Mn-Si C54-phase was determined by preparing samples at a number of different compositions, and the samples solely c…
The surface anchoring transitions of nematogens confined in thin films in the presence of surfactants at the surfaces are studied theoretically. The theoretical approach is derived from a free energy functional that includes a local Onsager type interaction as well as a microscopic description of the conformations of…
We synthesized 4,5-bis(octadecylthio)-4′,5′-bis(ethylcarbamoyl)tetrathiafulvalene and measured the electrical conductivity of its perchlorate (ClO4−)-doped nanofibers, which have double and triple helix structures. The nanostructure of the bis(octadecylthio)-TTF–diamide and its ClO4−-doped fibers in a 3 : 1 ratio was…
The most appropriate conditions in the site-controlled anode etching of Al using a mask film for the formation of tunnel pits with high aspect ratios over 20 were examined. Anode etching under a reducing current density at an appropriate ratio against time was effective for the suppression of the undesirable lateral d…
Herein we report a method to functionalize in vitro grown insulin amyloid fibrils with various inorganic materials. The counterion of the positively charged amyloid fibril is exchanged with anions from various salts; subsequent addition of appropriate cations results in functionalization of the amyloid fibril. We demo…
The effect of cooling rate on hardness and microstructure of the hot-stamped boron steel with 0.2 mass% carbon was investigated. After sheet specimen with a thickness of 1.6 mm or 1.2 mm was heated up to 900°C for 4 min, it was press formed and simultaneously quench hardened with dies, or water-quenched. Simulated hot…
Tetraethylaluminates of the divalent lanthanides ytterbium and samarium were grafted onto large-pore cubic periodic mesoporous silica (PMS) KIT-6, which had been dehydroxylated at 500 degrees C (specific surface area a(s): 500 m(2)g(-1); mesopore volume V(p): 1.06 cm(3)g(-1); main pore diameter: 85 A). The bimetallic…