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。
We demonstrate a technique of applying the prism-coupler method to the characterization of dielectric films that are too thin to support enough guided modes in air for the normal application of the method. The technique is based on applying suitable index-matching liquids on the surface of the thin film to increase th…
Abstract A novel method for synthesizing long afterglow silicate phosphor Sr 3 MgSi 2 O 8 :Eu 2+ ,Dy 3+ using TEOS and inorganic powders as reactants was reported. Acetic acid as a catalyzer controlled the hydrolysis of TEOS by adjusting pH value of the system. The morphologies of precursor were characterized by trans…
Anodic and cathodic polarization properties of stainless steel in high temperature pure water were measured to understand different responses of electrochemical corrosion potential (ECP) and frequency dependent complex impedance (FDCI) on H2O2 and O2. The findings are summarized as follows: 1. A Pt temporary reference…
In the paper a method for the compensation of current transformer is proposed. The method is based on two main steps: (i) the realization of an equivalent short circuit so that the magnetizing current I0is not dependent from the burden resistance; (ii) a circuit generating a compensating voltage Vc which compensate th…
Iron-gallium alloys can produce magnetostrictions of ∼400ppm and might serve as mechanically robust actuator/sensing materials. However, for polycrystalline Fe–Ga alloys, the magnetostrictive performance decreases with the increasing deviations from the ideal ⟨100⟩ texture. In this paper, three directionally solidifie…
We report a simple solution-phase method to fabricate one-dimensional ribbon-shaped Pd nanoparticle assemblies. A remarkable feature of this approach is that no templates are required to produce the long uniform Pd nanoribbons. More importantly, the produced Pd nanoribbons can be easily aligned and immobilized on Si s…
The effects of direction and degree of preferred orientation of Co2MnGe film on the surface roughness and the ordered structure were investigated by utilizing various buffer layers and underlayers. Degrees of preferred orientation of Co2MnGe film were estimated by measuring the full width at half maximum (FWHM) of the…
We report on first principles calculations that describe the electronic structure, magnetic exchange interactions, and ordering temperatures of diluted magnetic semiconductors. The calculated interatomic exchange couplings are used in a Heisenberg Hamiltonian, and ordering temperatures are calculated with the use of M…
Phase relationships in the system MgO-Al 2 O 3 -SiO 2 -Cr 2 O 3 (MASCr) were investigated experimentally from 1250 to 1560 °C using a 1-atm vertical quench furnace on 12 oxide mixtures covering a wide range of chemical compositions. Spinel, corundum, mullite, and sapphirine were found to display a wide range of solid…
Single phase Zn0.95Fe0.05O sample was obtained by the sol-gel method with annealing at 650°C for 6h in H2 5%/Ar balance gas atmosphere. The crystalline structure of Zn0.95Fe0.05O is determined to be a P63mc hexagonal structure with lattice constants a0=3.255Å and c0=5.207Å at room temperature. The Mössbauer spectra we…
Nitric acid solutions (c Pd up to 3.2 M) with variable HNO3 concentration were studied by electronic spectroscopy, 14N and 17O NMR, acid-base titration, gravimetry, and other methods. Solid phases that precipitated on storing these solutions were studied by X-ray phase analysis, thermogravimetry, and IR spectroscopy.…
Metal nanoshells have found promising applications in biomedical imaging and cancer therapy. To facilitate the application of nanoshells in scattering based imaging techniques, it is essential to characterize their light scattering properties. We have studied the light scattering from nanoshells at the quadrupolar and…
Photoluminescence is observed from PbSe nano-crystal quantum dots at 1550 nm wavelength filling in the core of a 1 m long photonic bandgap fiber. Photoluminescence at the peak wavelength of 1554 nm is observed with 1535 nm, 10 mW pumping.
The electronic structure of carbon nanotubes has been examined and recalculated using previous theoretical and experimental results. The effective mass and intrinsic carrier concentration have been calculated for different carbon nanotubes. These results show how different diameters and wrapping angles of carbon nanot…
The new solitary species Brandinia mosimanniae L. F. Fernandes &L. K. Procopiak is described for Antarctic Peninsula, living on rocks from intertidal to 14m depth sublittoral. Its main features are lanceolate valves with rostrate to capitate apices, narrow sternum but expanded at the centre, two conspicuous rimoportul…
Abstract The fast mixing of aqueous solutions of calcium chloride and sodium carbonate resulted in crystalline forms of vaterite and calcite under vigorous stirring. Then, the vaterite was transformed to pure calcite within about 180 min. The crystalline forms all grew with experimental time increase. Scanning electro…
NO x measurements in jet-stirred reactor (JSR) combustion of seven fuels are modelled using three complete chemical kinetic mechanisms. The two JSRs are operated at 1790 K, 1 atm, 2–4 ms, and the fuel-air equivalence ratio of 0.61. The modelled fuels are methanol, methane, ethane, ethene, propane, n-butane, and toluen…
The authors report a study of structural and chemical disorders in a ternary combinatorial epitaxial film of CoxMnyGe1−x−y in the composition range that includes the Heusler alloy Co2MnGe, using microbeam anomalous x-ray diffraction techniques. The structural and chemical ordering of the alloy has been found to be ext…
The remanence of sintered SmCo5 magnets is a direct function of their crystallographic texture. The Jr∕Js ratio was determined by electron backscattered diffraction (EBSD) for SmCo5 magnets which had been oriented in a pulsed field of 6T, compressed isostatically, and then sintered at 1150–1170°C for 1h. The experimen…
A process for wet powder spraying of binder‐free particle suspensions using pulse injection was devised for the fabrication of gas electrodes. The resulting deposited electrodes were found to have fine and uniformly distributed pores, to have good adhesion, and low interfacial resistance on electrolyte substrates. The…