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 effect of the chirality of planar spiral nanostructures on optical second harmonic generation (SHG) is studied in the paper. It is shown that the intensity of left and right circularly polarized SHG differs for structures of different handedness and the direction of the SHG polarization rotation plane is opposite…
The synthetic methods for two impurities of dabigatran etexilate are firstly described, and both of two impurities are characterized by NMR and MS spectral data.The suppression of impurities as well as the optimization process of dabigatran etexilate is also disclosed.
Ion exchange using aerosol OT (AOT) offers dye adsorption twice as fast as known methods. Moreover, it suppresses the dye-agglomeration that may cause insufficient dye-coverage on the photoelectrode surface. Consequently, its dual function of fast dye-loading and higher dye-coverage significantly improves the power co…
This study investigates the effect of alkali treatment on the thermal degradation and thermal stability of hemp, and hemp reinforced Poly Lactic Acid (PLA) composites. The results indicate that thermal stability of the composites decreases with increase in fiber loading due to the lower thermal stability of hemp compa…
The aim of this work is to provide some experimental information within the M-C-O ternary systems (where M is a transition metal belonging to the IVB group). More particular, this study is devoted to the determination of the reaction and specific heats of the ZrC x O y , TiC x O y , HfC x O y oxicarbides and of their…
Streaking and drain-out are two common early chip seal failures related to the viscosity of the asphalt emulsion used. An emulsion with a high viscosity at spraying could result in streaking, while another with a low viscosity after spraying could drain off the road surface under gravity. Some emulsions also tend to s…
We clarify the electrochemical behavior of an organometallic cobalt dithiolene complex (1-NH) with a secondary sulfonyl amide (–NHSO(2)–) substituted Cp ligand involving proton dynamics. The reductions of 1-NH and its deprotonated derivative (1-N(−)) are centered on the CpCoS(2) moiety. The 2e(−) reduction of 1-NH qua…
A one-dimensional silicon based photonic crystal with nonlinear defect layers is examined. The linear and nonlinear optical properties are analyzed. The transmission spectrum was obtained by applying the optical transfer matrix formalism to the photonic crystal. The various transmittance peaks obtained with the defect…
The synthesis and characterization of a novel fluorophore(1), with potential application as an optical brightener are reported. This compound was prepared by reacting 4,4-diaminostilbene-2,2-disulfonic acid with cyanuric chloride in the presence of Na2CO3 followed by the addition of trityl aniline. Solution and solid…
Carbon nanotubes (CNTs) directly grown on aluminum foil or nanoporous alumina templates by chemical vapor deposition are treated with acid for different times or annealed at different temperatures. Then, the CNTs are immersed into a manganese nitrate aqueous solution and then manganese oxides are formed by thermally d…
We demonstrate metamaterial-based electro-absorption THz modulators employing frequency-selective-surfaces (FSS) and graphene. By placing the graphene layer at an optimal distance from the FSS, the sensitivity of THz transmittance can be greatly enhanced.
Dielectric polarization in amorphous arsenic triselenide layers with various bismuth impurity contents in ac electric fields is studied. The experimental results obtained are interpreted within the model according to which Bi atoms at low concentrations are incorporated into the initial matrix network of the amorphous…
In this work, we analyze the electromagnetic structure of the pion. We calculate its electromagnetic radius and electromagnetic form factor in low and intermediate momentum range. Such observables are determined by means of a theoretical model that takes into account the constituent quark and antiquark of the pion wit…
The electric and magnetic properties of layered perovskites have been investigated systematically over the doping range . It was found that both Sr1.5Y0.5CoO4and Sr1.4Y0.6CoO4undergo ferromagnetic (FM) transition around 145 K and 120 K, respectively. On the other hand, Sr1.3Y0.7CoO4and Sr1.2Y0.8CoO4compounds showed pa…
Our ultimate objective is to form nanoparticles by merging oppositely charged nanodroplets containing different constituents of the nanoparticle and construct a desktop apparatus to do this. These nanodroplets will be in oppositely charged aerosols originating from oppositely charged solutions containing the different…
At present, there is considerable interest in polymer-metal chalcogenides/oxides based nano-composites on account of their tunable optical, magnetic, electronic and catalytic properties. Here in, we report a simple single step approach for the in-situ synthesis of combined cobalt sulphide/cobalt oxide in polyphenylene…
The packing arrangement of individual particles inside a granular material and the resulting response to applied stresses depend critically on particle-particle interactions. One aspect that recently received attention are nanoscale surface features of particles, which play an important role in determining the strengt…
The Canadian Supercritical-Water-Cooled Reactor (SCWR) is a vertical pressure tube reactor cooled with supercritical light water and moderated with heavy water. For normal operation, the local conditions of the coolant (density and temperature) and fuel (temperature) vary substantially along the channel. This means th…
The formation of silica particles by sol–gel processes from alkoxysilane precursors normally requires an aqueous environment. This study demonstrates that optionally macroporous or hollow silica particles can be formed from Si(OEt)4 within silicone oil: water, a key element in the process, is provided only from moistu…
The electronic properties of graphene can be controlled by substitutional doping to obtain p-type or n-type characteristics. To this end, bilayer graphene films are synthesized using CVD method and substitutionally doped with Nitrogen (N). Previously, XPS measurements done in tandem with Raman spectroscopy revealed th…