Materials Literature
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The plasma polymerization of naphthalene and octafluoronaphthalene using a DC glow discharge was performed. The prepared films were characterized by FT-IR and Raman spectroscopies, ESCA, ellipsometry, and contact angle measurements. The deposition rates of all of the plasma-polymerized films were high under general co…
The relationship between the polar (out-of-plane tilt) anchoring strength and the memory capability of surface-stabilized ferroelectric liquid crystal displays (SSFLCD) with rubbed polyimide (PI) surfaces as alignment layers has been investigated. The polar anchoring strength of nematic liquid crystals (NLC) on rubbed…
125Te nuclear spin relaxation (NSR) and electrical conducvitiy measurements were performed on single-crystalline paratellurite (α-TeO2) between room temperature and the melting point (1007K) at various oxygen partial pressures. A defect model is developed which fits the experimental data. The model involves ionic oxgy…
Investigations of the luminescence decay of Ce3+- and Tb3+-ions in solid solutions of the system K3La1−x−yCexTby(P04)2 were carried out at 298 K and 10 K using a laser pulse spectrometer or synchrotron radiation as excitation sources. A comparison of the decay times determined in the host absorption range (160 nm) and…
An X-ray powder-diffraction pattern for boracite, Mg 3 B 7 O 13 Cl, is reported. Boracite is orthorhombic, space group Pca 2 1 , and the refined unit-cell parameters are a =8.557(6), b =8.553(8), c = 12.09(1) Å. X-ray powder-diffraction patterns have been calculated for the boracite-group minerals boracite, ericaite,…
The e.m.f. of solid and liquid Ni-In alloys with compositions of x In = 0.35, 0.37, 0.40, 0.45, 0.50, 0.55, 0.60 and 0.65 were measured using a galvanic cell with calcia stabilized zirconia as electrolyte. The partial molar thermodynamic quantities of both components and the integral molar quantities were determined.…
The effect of W addition on the martensitic transformation (MT) and SM effect, especially reversible shape memory(two way shape memory) effect of the TiNi base alloys was investigated. It was found that addition of W in the TiNi and TiNi-Cu SM alloys does not affect essentially MT itself. Transformation temperatures s…
Oriented single-crystal specimens of CaF2 have been irradiated at room temperature with electrons of 0.5 and 1 MeV energies and their EPR-spectra taken in the range 4 K ≤ T ≤ 300 K. The observed spectra present numerous temperature-dependent peaks attributed to the VF-center, the U-center and to Ca colloids. The defec…
Ferroelastic transitions have been classified by Aizu according to the genuine source of their instability. Ferroelastics of the acoustic type display an intrinsic soft acoustic mode whereas ferroelastics of the optic type become elastically soft by a bilinear coupling between softening optic modes and strain. Some cr…
Several compositions of the solid solutions (Ca x Sr 1− x )CuO 2 and (Ca x Sr 1− x ) 2 CuO 3 , both of which are found as minor phases in the high-temperature superconductors, were prepared by solid-state reaction. X-ray powder-diffraction patterns for three compositions of (Ca x Sr 1− x )CuO 2 and two for (Ca x Sr 1−…
The perovskite-type metal oxide CaMnO3-x is known to accommodate substantial amounts of oxygen vacancies. High-resolution electron microscope investigations give evidence for ordering of the vacancies, i.e. well-defined structures in the compositional range of CaMnO2.5 < CaMnO3-x < CaMnO3. Within this range the metal…
Abstract When flexible polyvinyl chloride (PVC) is used in food contact applications, there is potential for plasticizer migration. Concern over this migration has led to the development of a novel plasticizer. Eastman EPZ plasticizer is a distilled acetylated monoglyceride (DACM). EPZ is a fraction from the molecular…
Abstract The electron paramagnetic resonance spectra of some gadolinium(III)-β-diketonate complexes were observed as frozen solutions. The observed spectra differ from each other upon changing the ligands, indicating that a change of the ligand fields and/or coordination structure of the ligands has a great effect on…
Different approaches to solution of the kinetic equations for relaxation of electronic excitations (analytical, numerical solution of integro-differential equations, and Monte-Carlo simulation) display the properties and evolution of the excited region created by the absorption of a high-energy photon. The relaxation…
The Prototype Fast Reactor (PFR) at Dounreay, UK, started operation in 1975 and was closed down in 1994. The present report contains a description of the PFR nuclear power plant, based on information available in literature and on information supplied during a visit to the plant. The report covers a description of the…
Abstract. Nucleation and interface propagation criteria are derived with account for temperature variation in the course of phase transition (PT) and internal variables. A model problem concerning the nucleation of thin inclined infinite layer in a rigid-plastic half-space under prescribed normal and shear stresses is…
Calorimetry and internal friction were used to study the martensitic phase transformation of shape-memory metal matrix composites consisting of nearly equiatomic NiTi with up to 20 vol.% TiC particles. The start and final temperatures for the austenite-martensite transformation (Ms, Mf) and martensite-austenite transf…
Three- and two-photon excitation of high-lying energy levels of ${\mathrm{Nd}}^{3+}$ was realized in La${\mathrm{F}}_{3}$: ${\mathrm{Nd}}^{3+}$ crystals using fundamental radiation of a tunable ${\mathrm{Ti}}^{3+}$ -sapphire laser. Strong UV and green-red luminescence lines were obtained by the three- and two-photon e…
Abstract A new type microporous polypropylene film was prepared simply by biaxial drawing of β-crystalline phase polypropylene The effect of draw ratio on the pore size distribution, ethanol sorption, and porosity, as well as β-α transformation during drawing were studied For the purpose of improving its hydrophilicit…
Abstract The antistatic behavior of glyceryl monoesters in polypropylene (PP) is measured at concentrations down to 0.30 wt%. Water contact angles and XPS analyses are used to explore the mechanism of internal antistats. Orientation of glyceryl monostearate (GMS) at the surface of PP is determined. Several new antista…