Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This study investigates the preparation of InSb-added TiO2 nanocomposite films by RF sputtering. The optical absorption spectra are obviously shifted to visible and near-infrared regions. High-resolution transmission electron microscopy indicates that sphere-shaped InSb nanocrystals with a size of about 15 nm are disp…
In this article, we consider phonon transport in thin silicon film and examine the influence of temporal oscillation of the temperature heat source on the phonon transport. We solve the frequency-dependent transient two-dimensional Boltzmann equation numerically to observe the quasi-ballistic effects of the phonons on…
A method is proposed to forecast how micrometric powders are converted on intermetallic nanocrystals by high-energy milling. Mixtures of MO-N or M-N as precursors were processed to obtain PbTe or PbSe. This transformation takes place by oxidizing highly reactive chalcogens such as Se or Te and reoxidation of PbO to fo…
X-ray diffraction data demonstrate that high-pressure (7.0–8.0 GPa), high-temperature (700–1100°C) processing enables partial V, Mn, Fe, Co, and Ni substitutions for copper in the structure of the double perovskite CaCu3V4O12. The lattice parameter of CaCu3 − x Ni x V4O12 (a = 7.294–7.298 Å) exceeds that of CaCu3V4O12…
A blue-green-emitting three-dimensional supramolecular compound (C10O2N2H8)(C9O7H6) (1) was synthesised under hydrothermal conditions and structurally characterised by elemental analysis, IR spectrum, 1H NMR and single-crystal X-ray diffraction. The crystal belongs to triclinic system with P 1¯ space group. The crysta…
A procedure is proposed for the synthesis of CeO 2 /SnO 2 catalytically active materials using an ethanolic film-forming solution containing cerium(III) nitrate and salicylic acid. We have studied the surface morphology of materials prepared by this procedure and assessed their catalytic activity for deep oxidation of…
The title compound, [Cd(C44H28N4)(H2O)]·(C12H24O6), was made by the reaction of the [Cd(TPP)] with an excess of 18-crown-6 in chloro-benzene (where TPP is tetra-phenyl-porphyrinate). The Cd(II) cation is chelated by a TPP anion and coordinated by a water mol-ecule in a distorted N4O square-pyramidal geometry, the Cd(I…
We demonstrate applications of a novel setup which is used for measuring relative phase difference between S and P polarization at oblique incidence point in optically denser medium by analyzing the relative frequency shift of adjacent axial modes of S and P resonances of a monolithic folded Fabry-Perot cavity (MFC).…
The sample of CuFeO2 delafossite was synthesized by solid state reaction for studying alcohol gas sensing properties. The Seebeck coefficient and electrical conductivity were measured in the high temperature ranging from 300 to 960 K. The CuFeO2 gas sensing displays high sensitive to ethyl alcohol gas in sensitivity r…
Using the transfer matrix method we calculate the electromagnetic transmittance for a multilayer dielectric structure, where the refractive index of the layers with odd numbering follows a Gaussian distribution of values, while the inserted even layers have a constant refractive index. The transmission spectrum presen…
Using ZnO pellets and molecular hydrogen as solid source and reactant gas respectively, Zn-ZnO microspheres were grown by hot filament chemical vapor deposition in low temperature growth regime. The presence of Zn-ZnO microspheres was confirmed by scanning electron microscopy (SEM) technique. It is suggested that micr…
In this paper, a study on the electron beam induced current (EBIC) technique for the extraction of semicon-ductor parameters in the planar-collector configuration is presented. The EBIC line scan data are computed using an expression published in the Journal of Engineering Mathematics in 1984. and their correctness is…
Abstract The activation of elemental sulfur and selenium with electrophilic iridium nitride [Ir(N){N(CHCHPtBu2)2}]+ allowed the synthesis of thionitrosyl‐ and selenonitrosyliridium complexes. The crystallographic and spectroscopic characterization of this rare series of chalcogenonitrosyl complexes [Ir(NE){N(CHCHPtBu2…
Over the lasts two decades equal channel angular pressing (ECAP) has been widely used to produce ultrafine grained microstructures with excellent mechanical properties in metallic materials. In this paper, a crystal plasticity finite element method (CPFEM) investigation has been carried out to examine the texture evol…
The application of CW radar techniques to Nuclear Quadrupole Resonance (NQR) detection of nitrogen based explosives and chlorine based narcotics enables the use of low power levels, in the range of 10’s of watts, to yield high signal strengths. By utilizing Rabi transitions the nucleus oscillates between states one an…
We have studied the X-ray induced conductivity of an iron-doped CdIn2S4 crystal grown by chemical vapor transport. The results demonstrate that doping with 3 mol % Fe increases the X-ray induced conductivity coefficient of CdIn2S4 by a factor of 2–8 relative to CdIn2S4 at effective X-ray hardnesses in the range 25–50…
A novel cold cathode field emission array (FEA) X-ray source based on ultra-nanocrystalline diamond (UNCD) field emitters is being constructed as an alternative for detection of obscured objects and material. Depending on the geometry of the given situation the flat-panel X-ray source could be used in tomography, radi…
We have studied the dielectric properties of microwave ceramic materials in the binary system Zn 2 TiO 4 -TiO 2 and examined the effect of doping with Sn 2+ , Sb 3+ , Bi 3+ , and Mg 2+ on the dielectric properties and microstructure of the ceramics. The doped Zn-Ti-O ceramics are thermally stable and have ɛ = 18–33 an…
We have assessed the average stress induced by the thermal expansion mismatch between the components of composites consisting of metallic nanowires and an anodic aluminum oxide matrix and performed model calculations for composites containing tin, zinc, and indium nanocrystals.
A new ternary dithulium hexacobalt icosastannide, Tm2.22Co6Sn20, and a new quaternary thulium dilithium hexacobalt icosastannide, TmLi2Co6Sn20, crystallize as disordered variants of the binary cubic Cr23C6 structure type (cF116). 48 Sn atoms occupy sites of m.m2 symmetry, 32 Sn atoms sites of .3m symmetry, 24 Co atoms…