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。
The temperature dependence of the heat capacity of nanostructured BaTiO 3 ceramics produced by the solid-phase method has been studied; before sintering, the synthesized charge is subjected to a severe action in Bridgman anvils in combination with shear deformation. It has been found that the ferroelectric transition…
Transparent p–n junctions composed of zinc oxide and magnesium-doped copper–chromium oxide thin films were prepared using radio-frequency (RF) magnetron sputtering deposition on indium–tin oxide glass substrates. The temperature of the substrate during deposition was varied to examine differences in the diode characte…
onic conductivity and dielectric properties of starch based polymer electrolytes doped with silver nitrate (AgNO3) at elevated temperatures were studied. The solid polymer electrolytes were prepared using the solution cast method. X-ray diffraction (XRD) analysis implied that the incorporation of 6 wt.% AgNO3 increase…
The geometric structure of carbon nanotubes (CNTs) can be considered to be the curling of graphene (graphite sheet) (Gao & Li, 2003; Shen, 2004). The physical parameters of carbon in graphite are widely adopted in the molecule dynamics (MD) simulations or other theoretical studies of CNTs, such as the bond energy and…
We prepared an octa maleimido functionalized POSS, namely octa(maleimido phenyl) silsesquioxane (OMPS)-reinforced polybenzoxazine hybrid nanocomposites, by using four different types of benzoxazines (BZ-Cy-DDM, BZ-Cy-DDE, BZ-Cy-DDS, and BZ-Cy-Ani). They were synthesized from 1,1-bis(3-methyl-4-hydroxyphenyl) cyclohexa…
Observation at the room temperature the spectra of the resonant inelastic light scattering by the spatially confined optical phonons as well as the excitonic luminescence caused by confinement effects in the ensemble of isolated quantum dots (QDs) nc -Si/SiO 2 is reported. It is shown that the samples investigated are…
The optical properties of ZnO nanoparticles (NPs) fabricated by three different methods were studied by the UV-excited continuous wave photoluminescence in order to estimate their down-shifting (DS) efficiency. Such a luminescent layer modifies the incident solar radiation via emitting wavelengths better matching the…
A plasmonic heterograting device, consisting of two juxtaposed parallel gratings with different periods, is demonstrated to function as a compact bandwidth-tunable polarization filter. The essential aspect of the structure is that the grating couples into a photonic mode of the substrate. Using this device, a linearly…
A compact chiral metamaterial (CMM) based on the complementary conjugate-swastikas structure was investigated. Both numerical simulations and experiments reveal that the structure exhibits giant optical rotation as well as high transmittances when a plane wave is normally incident on it, indicating strong chirality. T…
Abstract Pleistocene red soil horizons were exposed in different areas of the Barind Tract in north-west Bangladesh. X-ray diffractions of twenty seven samples from different depths of these soil horizons revealed that the soil horizons consisted of kaolinite, illite and chrysotile with significant amount of opal-CT.…
WO 3- x thin films were deposited on induim tin oxide (ITO) glass substrates with various oxygen flow ratios from 0.55 to 0.7 by the reactive facing-target sputtering method, at a power density of 4 W/cm 2 and room temperature. The structural properties of the WO 3- x thin films were measured by X-ray diffractometry a…
In this paper, a study on the demagnetization of ferromagnetic materials is conducted based on both experiments with magnetic treatment facility (MTF), which is a miniaturized experimental model, and numerical analysis methods in which the static magnetic finite-element method and Preisach model are combined. The magn…
BACKGROUND AND AIM OF THE STUDY: Percutaneous aortic valve implantation has become an alternative technique to surgical valve replacement in patients at high risk for open-chest surgery. Biological valve tissue is, however, a fragile material when folded for small-diameter catheter insertion purposes. Textile polyeste…
The dislocation density ρ in copper and tantalum specimens with various grain size that remained after high-strain-rate loading by shock and quasi-isentropic waves with amplitudes of 20–100 GPa has been studied using X-ray diffraction analysis. The deformation rate was 10 6 –10 9 s −1 . It has been confirmed that high…
To reduce the iron loss of a reactor stacked with non-oriented steel plates, we have proposed the method of loss reduction improving the iron core configuration using the magnetic field analysis taking account of the laminated structure by the homogenization technique. In this paper, the iron loss reduction method is…
A new strategy was applied to effectively synthesize spherical core shell structural graphite-coated iron (Fe@G) composite nanoparticles, which were characterized by XRD, TEM, EDX, SAED and XPS.
The thermal decomposition of neutral ([Cu(H 2 O)(C 4 H 2 O 4 )]) and acidic ([Cu(H 2 O) 4 ](C 4 H 3 O 4 ) 2 ) maleates can conventionally be divided into four stages: (1) dehydration, (2) polymerization, (3) isomerization of the maleate ion to the trans form with the simultaneous reduction Cu(II) → Cu(I), and (4) deca…
The results for the calculation of the thermodynamic characteristics of finite two-dimensional FeAs clusters simulating iron-based superconductors have been obtained. The generalized quantum Monte Carlo algorithm is modified and used to calculate the energy and occupation numbers of finite FeAs clusters in the two-orb…
Electric Arc Furnaces (EAF) used for scrap melting are steadily growing in size and rating. At the same time, they appear as increasingly complex loads on feeding grids. In Turkey, a Static Var Compensator (SVC) rated at 0-330 Mvar has been commissioned in a green-field steel plant project based on scrap melting. The…
A simplified domain structure model (SDSM) is developed as a building block with which to construct a physical macroscopic magnetization model exhibiting pinning-type hysteresis. The pinning field is represented by a stop hysteron. The proposed SDSM represents the vector magnetic property of a silicon steel sheet qual…