Materials Literature
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Nanostructured lanthanum phosphates (LaPO 4 ) with different P/La ratios ranging from 0.5 to 2.0 were prepared using aqueous solutions of La(NO) 3 ·6H 2 O and NH 4 H 2 PO 4 as La and P sources, respectively, by a sol−gel precipitation method. These prepared catalysts were thoroughly characterized by various techniques…
WS2 fullerene particles and nanotubes show a diameter and morphology dependent Raman response, see figure showing response for WS2 nanotubes of 290 nm and 50 nm diameter. This enables the classification of WS2 nanotubes, fullerenes, and nanocrystals, and the estimation of geometric properties.
Thermoelectric Properties of Bi2Te3-Based Thin Films with Fine Grains Fabricated by Pulsed Laser Deposition, Obara, Haruhiko, Higomo, Shun, Ohta, Michihiro, Yamamoto, Atsushi, Ueno, Kazuo, Iida, Tsutomu
Photo-induced switching from the low-spin state to the high-spin state is studied in a model spin-crossover material with long-range interactions induced by elastic distortions due to different molecular sizes of the two spin states. At a threshold value of the light intensity, nonequilibrium critical behavior is obse…
We use neutron scattering to study the effect of electron doping on the structural or magnetic order in ${\mathrm{BaFe}}_{2}{\mathrm{As}}_{2}$. In the undoped state, ${\mathrm{BaFe}}_{2}{\mathrm{As}}_{2}$ exhibits simultaneous structural and magnetic phase transitions below 143 K. Upon electron doping to form ${\mathr…
In our previous study, we demonstrated the PEG coated gold nano-particles can be used as a novel CT contrast agent for blood pool imaging (angiography) and for diagnosis of hepatoma, suggesting gold nanoparticle-based CT contrast agent may be able to overcome limitations of conventional iodine based contrast agents.
Mononuclear [Fe(H(2)L(R))(2)](2+) and dinuclear [Fe(2)(H(2)L(R))(3)](4+) (R = H, 2-Me, 5-Me) complexes containing the new imidazole-4-carbaldehyde azine ligand (H(2)L(H)) and its derivatives (H(2)L(2-Me) and H(2)L(5-Me)) prepared from the condensation reaction of 4-formylimidazole or 2-methyl- or 5-methyl-4-formylimid…
A series of sitting-atop (SAT) complexes, [(ZrO)<TEX>$H_2t(X)pp(NO_3)_2$</TEX>], have been prepared via the reactions of free base meso-tetraarylporphyrins, <TEX>$H_2$</TEX>t(X)pp, with zirconyl nitrate hydrate, ZrO(N<TEX>$O_3)_2{\cdot}xH_2$</TEX>O. The products have been characterized by a variety of methods includin…
Abstract Manganese oxide (MnO 2 ) nanowires with diameters of 40–50 nm and lengths up to several micrometers have been successfully synthesized through a simply hydrothermal route. The influences of synthetic parameters, such as reaction time, and reaction temperature, on the growth and morphologies of MnO 2 nanowires…
The aim of the present study is to investigate the effects of rare earth and aluminium on the structural variations of medium carbon Fe–B cast alloy under the same austenitising temperature and different austenitising times. It is observed that the as cast microstructure of Fe–B cast alloy consists of the eutectic bor…
The optical properties of ZnO nanorods and nanowires grown by our newly developed nanoparticle-assisted pulsed-laser deposition (NAPLD) technique were studied by photoluminescence (PL) spectroscopy. This NAPLD technique, which does not require a catalyst for crystal growth, is expected to synthesize high-quality nanos…
Crystal Growth and Luminescence Properties of Pr-Doped LiYF4 and LiCaAlF6 , Yanagida, Takayuki, Yokota, Yuui, Fujimoto, Yutaka, Yoshikawa, Akira, Kawaguchi, Noriaki, Ishizu, Sumito, Fukuda, Kentaro, Suyama, Toshihisa, Sarukura, Nobuhiko
Optically deformable membranes and cantilevers based on azobenzene liquid crystal polymer networks (azo-LCN) are demonstrated in the context of dynamic optical systems. Large modulations in laser beam propagation direction or amplitude directed by laser-induced changes in material shape are demonstrated. These macrosc…
We demonstrate the feasibility of white organic light-emitting diodes that exclude the transparent conductor indium-tinoxide. Instead, a highly conductive Orgacon<sup>TM</sup> PEDOT:PSS material in combination with a metal support structure is used as transparent anode and hole-injection layer. The PEDOT:PSS exhibits…
BACKGROUND: Bacillus anthracis is the causative agent of anthrax and a potential bioterrorism threat. Here we report the biochemical and structural characterization of B. anthracis (Ames) alanine racemase (AlrBax), an essential enzyme in prokaryotes and a target for antimicrobial drug development. We also compare the…
Purpose: The aqueous fruit pulp extract of Hunteria umbellata K. Schum is used traditionally for the treatment of various fevers. The purpose of this study was to evaluate the extract for antipyretic and analgesic activity, and determine its probable mechanism of action.Methods: Pyrexia was induced in rabbits by intra…
The monomer-aggregate equilibrium of four phenothiazine (PN) dyes, containing thionine (TH), methylene blue (MB), new methylene blue (NMB), and 1,9-dimethylmethylene blue (DMB), in the tungsten(VI) oxide (WO(3)) nanocolloid solution has been investigated by means of UV-vis spectroscopy. Addition of PN dye into the WO(…
Molten hydrated salt was used, for the first time, as a new kind of solvent to explore the synthesis of complex oxide nanomaterials. Employing Ba(OH) 2 ·8H 2 O as the solvent, and rutile TiO 2 as the reactant, core−shell and hollow nanoparticles of perovskite-type BaTiO 3 were successfully fabricated under sealed cond…
Abstract Nanocrystalline diamond (NCD) films were grown on gold/Al 2 O 3 substrate using microwave plasma‐enhanced chemical vapor deposition (PECVD) process. The NCD morphology was controlled by the deposition time and it was investigated by scanning electron microscopy (SEM). Gas sensing properties of NCD surface con…
Here we report the supramolecular assembly of poly(l-lysine)-b-polyglycine diblock copolypeptides at different solution conditions. Light scattering and confocal microscopy indicate that the supramolecular aggregates initially formed in solution are vesicles with a broad size distribution, depending strongly on the in…