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。
A magnetostriction phenomenological model able to include the effects of varying mechanical load is presented. The model exploits the formalism of the classical Preisach model and is therefore easy to implement, well behaved, and easy to identify. Experimental results over a real actuator showing the promising perform…
The preparation is reported of particles of photopolymerisable monomer/chiral dopant composites with a crystalline (Cr)‐chiral nematic (N*) phase transition. By mixing particles with different pitches of the N* phase in the Cr phase and crosslinking the liquid crystal (LC) monomer molecules by photopolymerisation in t…
The effects of water adsorption on the dielectric constant and leakage current of porous silica thin films were investigated. The films were prepared by the sol–gel method and their pore surfaces became hydrophobic with 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS) or hexamethyldisilazane (HMDS) vapor phase treatment.…
The dielectric constant ɛ and loss tangent tanδ of Sr 3 CuNb 2 O 9 perovskite ceramics prepared by solid-state reactions have been measured at temperatures from 300 to 900 K and frequencies from 25 to 1 × 10 6 Hz. The results demonstrate that the samples slowly cooled from the temperature of the final, high-temperatur…
The authors focus on thermal and nonthermal (radiation-induced) surface processes that affect the reflectivity of TiO2-capped multilayer mirrors used in extreme ultraviolet (EUV) lithography. Low energy electron beams mimic excitations initiated by EUV radiation. Where appropriate, comparison is made with electron bom…
Permanent gratings were written, without the aid of external fields, in planar nematic liquid crystal cells doped with only Methyl Red (MR) as well as cells doped with both Methyl Red and single-wall carbon nanotubes (CNTs). Grating formation based on trans-cis photoisomerism of MR followed by surface adsorption of th…
The capability of aqueous starch solution for reduction of Ag + ions and stabilization of metallic silver nanoparticles was examined. Kinetic parameters of formation of Ag nanoparticles were determined.
In this study, the separation of Fe–Al–Zn dross phase from hot dip galvanised zinc bath was conducted by using alternating magnetic field. The compositions of the zinc dross were detected by energy dispersive spectrum. The electrical conductivities were measured by physical properties measurement system. The separatio…
We present a new linearly scaling three-dimensional fragment (LS3DF) method for large scale ab initio electronic structure calculations. LS3DF is based on a divide-and-conquer approach, which incorporates a novel patching scheme that effectively cancels out the artificial boundary effects due to the subdivision of the…
The formation of two structurally related phases; cubic pyrochlore and monoclinic zirconolite in Bi2O3-ZnO-Nb2O5 (BZN) ternary system was investigated. Phase pure Bi4Zn4/3Nb8/3O14 synthesized via conventional solid state methods at 950oC was refined and fully indexed with space group C2 /c; lattice parameters, a = 13.…
Interlayer exchange coupling (IEC) behavior in epitaxial Co2MnSi (20 nm)/Cr/Fe (7 nm) trilayers has been investigated against Cr spacer thickness (tCr= 0.3-6.3 nm). High-quality trilayer samples have grown on a Cr (5 nm)/Au (30 nm)/Cr (15 nm) buffer layer on a MgO substrate by ultrahigh vacuum (UHV) compatible dc sput…
Here we present a new method for improving adhesion between natural rubber (NR) and polyester fabric. This is done by in situ grafting of maleic anhydride (MA) onto NR in a two-roll mill. The grafting procedure was followed by infrared spectroscopy (FT-IR). The effect of ultraviolet/ozone (UV/O3) radiation on the stab…
This paper reports that the large-scale single crystalline boron carbide nanobelts have been fabricated through a simple carbothermal reduction method with B/B 2 O 3 /C/Fe powder as precursors at 1100°C. Transmission electron microscopy and selected area electron diffraction characterizations show that the boron carbi…
Mixed oxide fuel assemblies (MFA-1 and MFA-2 assemblies) were irradiated in the fast flux test facility to evaluate the irradiation performance of fast reactor core fuels at high burnups and high fast neutron fluences. The MFA-1 and MFA-2 assemblies achieved respective peak pellet burnups of 147 and 162GWd/t, and resi…
Pressureless‐sintered BaTiO 3 ceramics containing ferroelectric domains are subjected to Vickers microindentation at room temperature. Domain switching along indentation cracks is investigated using electron backscatter diffraction (EBSD) in a scanning electron microscope. Crystallographic orientation relationships be…
This paper studies the electronic structure and native defects in transparent conducting oxides CuScO 2 and CuYO 2 using the first-principle calculations. Some typical native copper-related and oxygen-related defects, such as vacancy, interstitials, and antisites in their relevant charge state are considered. The resu…
Carbon powder has been functionalized with nitroazobenzene groups by the reduction of 3-methoxy-6-methyl-4- [(2-nitro-4-methylphenyl) azo] benzene diazonium zinc chloride double salt (“ Fast Corinth V zinc chloride double salt”) in the presence of hypophosphorous acid as a chemical reducing agent. This provides an eas…
YAG:Ce nanosized spherical precursors were synthesized by coprecipitation using ammonium hydrogen carbonate as precipitant. Composition, phase transition, morphologies, and luminescence properties of the powders during calcination were studied. The precursors directly convert to pure YAG structure at about 900°C. The…
Of the four reported complexes (Ph2Bq-x2), where x2��5,7-dibromo (1); 5,7-diphenyl (2); 5,7-bis(biphenyl-4-yl); 5,7-bis(9,9-dihexylfluoren); q��8-quinolinelate, the replace- ment of 5,7-bis(biphenyl-4-yl) and 5,7-bis(9,9-dihexylfluoren) by di(p-nitrostyryl) (3) and distyoyl (4), respectively, can also cause significan…
The effect of cationic template on the adsorption of copper-phthalocyanine-3,4′,4′′,4′′′-tetrasulfonic acid tetrasodium salt [Cu(tsPc)−4·4Na+] in MCM-41 and MCM-48 mesoporous materials was investigated, using cetyltrimethylammonium bromide (CTAB) as the cationic template and tetraethyl-orthosilicate as the silica sour…