Materials Literature
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The frequency of dipole relaxation of liquid crystal (LC) layer at LC- solid interface, fr, is shown to be in full correlation with the polar anchoring energy W p ; the increase of W p is accompanied with the decrease of f r . This correlation is established by the use of the aligning polyimide layers treated with dif…
Selected-area electron diffraction (SAED) patterns obtained on samples of the heterophyllosilicates epistolite and murmanite from Mt. Malyi Punkaruaiv, Lovozero massif, in the Kola Peninsula of Russia, invariably show broad, streaked and split diffraction-spots and reveal oriented intergrowths (syntaxy) between the tw…
Abstract (NMe 4 ) 3 [Fe(NCS) 6 ] crystallizes from ethanol in the monoclinic space group C 2/ c . Two different types of complex ions are contained in the unit cell, though both possess exclusively N ‐coordination of the thiocyanate ligands. In one ion, the thiocyanate ligands are all essentially linearly bound, with…
Abstract Metal-oxide interfaces of three different materials irradiated in a pressurized water reactor have been analyzed by TEM and AEM. Standard Zircaloy-4, low-tin Zircaloy-4, and Zr-2.5%Nb were used for this study. The microstructure of the material on the two sides of the metal-oxide interface, the geometry of th…
The Mn complexated corrole [ T (4- NO 2 P ) Corr ] Mn ( py ) (3) has been prepared ( py = pyridine ) where [ T (4- NO 2 P ) Corr ] is the trianion of the electron-poor 5,10,15-tris(4-nitrophenyl)corrole (1). The preparation of 3 includes a new synthetic method to form the corrole ligand 1 in a two-step synthesis. The…
We describe a novel scheme for obtaining a superhigh numerical aperture gradient-index (SHNA GRIN) lens from multiple thin layers of two or more materials with large refractive-index contrast. Design procedures for the lens are described, including variation of the layer thickness to achieve focusing and of the thickn…
The knowledge of sewing thread tension determined at different measuring locations on the sewing machine is the basis for the definition of the loading magnitudes acting during the stitch formation process and the locations at which they appear, concerning the stitch cycle or the main shaft turn of the sewing machine.…
Abstract New symmetrical and asymmetrical triphenylene‐containing discotic liquid crystals with two different peripheral alkyl chains, known as sym ‐TP(OC 6 H 13 ) 3 (OR) 3 and asym ‐TP(OC 6 H 13 ) 3 (OR) 3 , were synthesized. Their thermotropic liquid crystal properties were investigated through polarizing optical mi…
Some novel features of strontium titanate are presented. First, it reveals secondary ferroicity when exposed to an external electric field in its tetragonal paraelectric state. It is shown on isotopically doped SrTi 18 O 3 (STO18) that odd-oriented ferroelastic domains can be switched under anomalously large electrost…
Glass-bead blasted stainless steel sheets are used in recent time for many applications in architecture or design of machines. If chloride can be accumulated on the surface, glass-bead blasted stainless steel show a worse corrosion behaviour than ground stainless steel. The corrosion behaviour of glass-bead blasted st…
Nous decrivons la elsmoreite, WO 3 0.5H 2 O (IMA 2003-059), nouvelle espece minerale provenant du gisement d'etain de Elsmore, situe dans la region de Nouvelle-Angleterre du nord du Nouveau Pays de Galles, en Australie. Le nom est inspire de la localite. La elsmoreite se presente en amas microcristallins pulverulents…
We report on the first experimental demonstration of the details of the transient response in the four sequential processes of active magnetic regenerative refrigeration: magnetization, warm blow, demagnetization, and cold blow. The experimental results display the details of the gradual temperature divergence due to…
The liquid phase oxidation of D-Sorbitol has been carried out in water using oxygen as the oxidant in the presence of gold based catalyst. Au/C, Pt/C and Pd/C monometallic systems were compared to bimetallic Au/Pd and Au/Pt on carbon. A strong synergistic effect was observed producing a significant increase of reactio…
The cover picture of this issue of physica status solidi (c) has been taken from the article [1].
We demonstrate that the adhesive behavior of a phenol-terminated bisphenol A polycarbonate melt to a (111) nickel surface changes significantly if a small amount of short chains is present, i.e., in polydispersed melts or self-blends. Attractive interaction of the chain ends with the surface results in an adsorbed lay…
We find by Wilson numerical renormalization group and conformal field theory that a three-orbital Anderson impurity model for a C60(n-) molecule has a very rich phase diagram which includes non-Fermi-liquid stable and unstable fixed points with interesting properties, most notably high sensitivity to doping n. We disc…
We have discussed dielectric characteristics of liquid nitrogen (LN/sub 2/)/polypropylene (PP) laminated paper composite insulation system for the practical electrical insulation design of high temperature superconducting (HTS) cables. Focusing on the partial discharge (PD) inception characteristics and mechanism, the…
A three phase volume averaging model has been developed to simulate globular equiaxed solidification, the three phases being liquid, solid and air. The basic conservation equations of mass, momentum and enthalpy have been solved for each phase, and the thermal and mechanical (drag force) interactions among the phases…
We have investigated the relationship between the surface property of rubbed polyimides and the variation of pretilt angle according to the side chain and main chain structures. We calculated the surface free energy of synthesized polyimide surface by measuring the contact angles of distilled water and methylene iodid…
Phase transformations and mechanical properties of both Ti–29Nb–13Ta–4·6Zr and Ti–39Nb–13Ta–4·6Zr (wt–%) alloys were investigated. The microstructure of the 29Nb alloy is sensitive to solution and aging treatment. Ice water quenching from the solution treatment temperature resulted in (β+α") microstructure but air or…