Materials Literature
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This paper describes the principle of flow-levitation method. An analytical mode l for preparation of nanometal powders in inert gases is presented. Associated w ith the relation between dynamics of gas flow and temperature, the process of th ermal diffusion, nucleation, condensation and crystallization of powders is…
The synthesis, solution and solid state characterization, and the electrochemical behaviour of [RuCl(dmso-O)4(NO)][OTf]2 (2) and [Ru(dmso-O)5(NO)][OTf]3 (3), the first examples of Ru complexes having more than three O-bonded dmso ligands, are described.
Dislocation glide in a metal matrix with spherical precipitates has been simulated on a computer. The critical resolved shear stress (CRSS) p is derived, and the superposition of two strengthening effects is investigated. Firstly, the precipitates are incoherent; they cannot therefore be sheared but are overcome by th…
We have rigorously calculated for the first time all the inter-electrode and pixel capacitances of Thin-Film Transistor Liquid Crystal Displays using the electrical energy distribution inside a liquid crystal cell. The energy distribution is obtained from the three-dimensional profiles of potential distribution and mo…
In flexible pipes, the steel wires in the annular space can sometimes be in contact with a corrosive environment containing condensed water or seawater and acid gases (CO2 and H2S), coming from the bore by permeation through internal polymer sheaths. In order to choose the most suitable steel wires to avoid hydrogen e…
The thermodynamics of dimerization of zinc(II) tetra-4-carboxyphthalocyanine in aqueous solutions and its solvation interactions with electron-donating pyridine molecules were studied by calorimetry.
Experiments were carried out to investigate the effect of composition, heat-treatment and nitrogenation conditions on the magnetic properties of Sm-Fe-Co-Ti-N compounds with TbCu7-type structure. The optimum preparation conditions of the compounds were as follows: composition: {Sm10(Fe0.95CO0.05)89.7Ti0.3}82.0N18.0, r…
It was shown that the temperature in the range 20 ? 65 ?C has considerable effects on the electrochemical anodic dissolution of chromium in the active potential range as well as on the electrochemical hydrogen evolution reactions on bare and oxide covered chromium surfaces. Also, the chemical dissolution of chromium i…
Recently, unimolecular devices have attracted significant attention as a ‘post-silicon technology’ to enable the fabrication of future nanoscale electronic devices. In this paper, we describe a candidate molecule for a rectifier function using porphyrin polymer and a photovoltaic cell using fullerene-based supramolecu…
Herein we report the syntheses and characterization of the novel title mono- and dinuclear compounds from pentacarbonyliron. They were obtained in a stepwise manner by UV irradiation of [Fe(CO)5] with the appropriate ligand in THF and were characterized by ¹H, 13C, 13C{¹H} 31P and 31P{¹H} NMR spectroscopy, by IR spect…
The infrared absorbance and the dispersion of the refractive indices in the region 0.49–0.63 μm of the discotic mesogen 2,3,6,7,10,11-hexaheptyloxytriphenylene were studied for the columnar and isotropic phases. The temperature dependence of the orientational order parameter S and the local field parameters of a light…
This is the fourth and final part in a series of research papers featuring structure-property relationships in natural cellulosic fibres; this part gives a comparative study made of the biodegradability of various fibres when buried in soil. The weight loss of the fibres after burial for different lengths of time was…
Polyelectrolyte thin films constructed using the method proposed by Decher and coworkers are studied using several electrochemical techniques, such as cyclic voltammetry and linear sweep voltammetry with rotative disc electrode. The main goal of this work is to evaluate the influence of the number of layers and the ch…
Abstract Typical crystals Pb 0.75 K 1.80 Li 1.70 Nb 5 O 15 , belonging to tetragonal tungsten bronze materials, were grown by the slow cooling technique. The crystals were characterized at room temperature by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HREM). The structure, solved com…
Employing an aero-acoustic levitator, the Fe2O3-16.5 mol% La2O3 eutectic alloy was levitated, melted, undercooled and then solidified under a containerless condition when a continuous laser beam heating system was incorporated. By revealing the surface and cross-sectional microstructures, copious nucleation is confirm…
Four types of tricalcium aluminate solid solutions with different concentrations of Na 2 O and SiO 2 were prepared and examined using an electron probe microanalyzer. The atomic ratios, including those determined in a previous study, were derived from the oxide compositions and provided excellent correlations between…
Supramolecular assemblies of radial multialkynylbenzene derivatives are presented which arise either from specific interactions with interfaces or from the covalent linkage of different molecular fragments. Surface-assisted molecular orientation control was investigated at the air/water interface, on photo-oriented az…
Abstract A novel stereo‐regular organo‐bridged ladder‐like polymethylsiloxane ( LPMS ) was synthesized by a stepwise coupling polymerization on the basis of an amido H‐bonding‐assisted self‐assembling template. The monomer N,N′ ‐bis{4‐[3‐(diethoxymethylsilyl)propoxy]‐phenyl}terephthalamide ( M ), prepared by hydrosily…
A theoretical model is proposed for prediction of the interface-pressure profile applied by plain-knitted elastomeric structures used in compression therapy. Compression therapy may be applied through pressure garments to prevent and reduce venous reflux and peripheral oedema. The interface pressure induced by a compr…
Intake of lead is harmful to the human body. Therefore, it is necessary to substitute other alloying elements for lead in Cu alloys. Using a Cu–9.5 mass%Sn alloy powder and CaF2, which has sliding properties equal to lead, a composite sprayed coating (by flame spraying) was developed. The results were as follows. A co…