Materials Literature
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Abstract A core–shell fluorine‐containing polyacrylate emulsion was successfully prepared by UV‐initiated seeded emulsion polymerization in two stages in the presence of two photoinitiators. The water‐soluble photoinitiator for the core polymerization and the oil‐soluble photoinitiator was used for the shell polymeriz…
利用＂团簇＋连接原子＂结构模型研究了典型低弹bccβ-Ti固溶体合金的成分特征.对现有低弹β-Ti固溶体合金的成分分析表明它们均满足团簇式[CN14团簇]（连接原子）x.根据该式,设计了Ti-Mo-Nb-Zr系列合金[MoTi（14）]Ti（质量分数表达时为Ti-11.8Mo）,[MoTi（14）]Nb（Ti-11.2Mo-10.8Nb）,[MoTi（14）]Nb2（Ti-10.1Mo-19.5Nb）和[Mo（Ti（13）Zr）]Nb2（Ti-9.2Zr-9.6Mo-18.7Nb）,并采用Cu模吸铸快冷技术制备直径为3和6 mm的合金棒.结果表明,吸铸制备的合金均为bcc结构;当连接原子由Ti变成更低弹的Nb时,合金弹性模量降低;…
We demonstrate that the wetting behavior of a thin liquid film, poly(4-bromostyrene) (PBrS), on top of a solid substrate may be effectively controlled with the insertion of a secondary liquid film, poly(4-vinyl pyridine) (P4VP), underneath the primary film. This secondary film remains stable under all conditions, and…
Solid dispersions and mixtures of quercetin and poly(vinylpyrrolidone) (PVP) K30 are studied by differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and heat capacity ( C p ) measurements. The IUPAC name for PVP is 1-ethenylpyrrolidin-2-one, and that…
Zinc oxide (ZnO) films were deposited on p-Si substrates by sol-gel spin coating method. Zinc acetate dihydrate (ZnAc), 2-methoxyethanol and monoethanolamine (MEA) were used as a starting material, solvent and stabilizer, respectively. The films were deposited 500°C, 600°C, 700°C and 800°C for 1 h in air. The effects…
A detailed investigation of the electronic- and magneto-transport properties of Nd(0.8)Sr(0.2)MnO(3) with the variation of grain size (down to 42 nm) is presented here. Interestingly, we observe that the ferromagnetic insulating state is suppressed and a metallic state is stabilized as the grain size of the sample is…
Motivated by the recent advances with magnetic nanoparticles, in this research we propose a new technique for their characterization based on the measurement of certain polarimetric parameters of the scattered light, such as the linear polarization degree when it is determined at a "right-angle" scattering configurati…
Several reaction-induced diffusion processes to fabricate high-density MgB2materials are developed, and the critical current density (Jc) has been notably enhanced. In this study, microstructure in high-density MgB2wires fabricated by an internal Mg diffusion (IMD) process has been investigated. The inner reacted regi…
New technologies were developed for the manufacture of a wide spectrum of carbon nanomaterials, such as fullerene-like C60-C70 clusters, nanotubes, nanodiamonds and amorphous carbon, using electrical wire explosion and electric breakdown of organic liquids techniques. The influence of the synthesis parameters on phase…
Dispersion behavior of the slurries consisted of bimodal-type AlN powders was examined in non-aqueous solvent system. Azotropic solvent system and copolymer acidic dispersant were applied to the slurries. Measurements of the sedimentation height and the viscosity of the each slurry, and the test of particle size distr…
In this work, either SiC or separate Si and C (Si+C) powders of up to 10 weight percentage were in situ reacted with Mg and B (molar ratio of 1:2) and the superconducting properties compared. The latter shows a smallera-axis lattice cell parameter as compared to the same level of SiC additions, indicating a higher lev…
Shielding of magnetic fields (magnetic shielding) by rare earth-based REBCO coated conductors with a highly oriented superconducting layer was measured. The shielding of magnetic fields was measured using a Hall effect sensor installed between bundles consisting of commercial REBCO conductors 12 mm in width. Measureme…
Alizarin Red S modified screen printed carbon electrodes were developed for the electrochemical detection of aluminum ion. The electrodes developed use screen-printed carbon electrodes(SPCEs) coupled with chemical modification with an organic chelator, Alizarin Red S(ARS), for aluminum ion detection in aqueous solutio…
A dicyanamido-bridged polymeric complex formulated as [NaCu2(dca)2(salpn)2]n (1) (dca = dicyanamide anion, H2salpn = N, N’-bis (salicylaldehyde)propylenediimine Schiff base) has been synthesized and characterized systematically. The complex 1 forms the single end-to-end (-) dicyanamido-bridged one dimensional (1D) inf…
A new set-up is presented to measure element-selective magnetization dynamics using the ALICE chamber [Grabis et al. (2003), Rev. Sci. Instrum. 74, 4048-4051] at the BESSY II synchrotron at the Helmholtz-Zentrum Berlin. A magnetic-field pulse serves as excitation, and the magnetization precession is probed by element-…
Microstructural and mechanical properties of the TiN films deposited on Si substrates under various substrate bias voltages by a reactive magnetron sputtering have been studied. It was found that the crystallographic texture, microstructural morphology and mechanical property of the TiN films were strongly depended on…
A new zinc coordination polymer, [Zn(atda)(4,4′-bipy)]n (H2atda = (4-amino-1,2,4-triazole-3,5-diyldithio)diacetic acid, 4,4′-bipy = 4,4′-bipyridine), was synthesized by rheological phase reaction method and characterized by elemental analysis, IR, UV and single-crystal X-ray diffraction. The results reveal that it pos…
Abstract Waste poly(p‐phenylene terephthalamide) fibers (PPTA) were chemically modified through nitration and nitro‐reduction reactions to obtain nitro‐ and amino‐containing fibers and used as adsorbents for metal ions. The structures of the modified fibers were characterized by Fourier transform infrared spectroscopy…
ADVERTISEMENT RETURN TO ISSUEPREVCommentNEXTComment on "Catalytic Activity of the Rh Surface Oxide: CO Oxidation over Rh(111) under Realistic Conditions"Feng Gao†, Sean McClure, Mingshu Chen, and D. Wayne Goodman*View Author Information Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Te…
ICRF (ion cyclotron range of frequencies) discharge cleaning with a toroidal field and an additional vertical field was carried out on EAST recently. With the injected ICRF power of 10 kW, He pressure of 10−3 Pa, toroidal field of 0.5 T and vertical field of 0.01 T, ICRF plasmas became approximately symmetric in both…