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。
Layered core−shell bimetallic silver−gold colloids in the size range of 10−16 nm have been prepared by the seed-growth method. Silver nuclei were covered by gold shells of various thicknesses without any stabilization agent. Interfacial (Ag)Au colloid−2,2‘-bipyridine films were prepared from these bimetallic colloids…
Ag-coated Au and Au-coated Ag colloidal particles were prepared by deposition of Ag or Au through chemical reduction on Au or Ag colloids, respectively. Different amounts of the depositing metal were employed in order to obtain different compositions of the Au 100 - x Ag x and Ag 100 - y Au y resulting particles. The…
Described is the construction of an ultrafast electrochromic window. One electrode of this window is based on a transparent nanostructured TiO 2 (anatase) film (4.0 μm thick) supported on conducting glass (F-doped tin oxide, 10 Ω cm -2, 0.5 μm thick) and modified by chemisorption of a monolayer of the redox chromophor…
Magnesium is a key determinant in CaCO3 mineralization; however, macroscopic observations have failed to provide a clear physical understanding of how magnesium modifies carbonate growth. Atomic force microscopy was used to resolve the mechanism of calcite inhibition by magnesium through molecular-scale determination…
Acoustic noise emissions from a direct torque controlled (DTC) induction motor drive are investigated. Due to the hysteresis control of the flux and torque, DTC results in a variable switching frequency and dispersed voltage and current harmonic spectra. It is shown that both the bandwidths of the flux and torque hyst…
We theoretically investigated electron and phonon transport in a quantum superlattice and evaluated a possible thermoelectric figure of merit increase. The presented model takes into account electron and phonon transport modifications due to the space confinement caused by the mismatch in electronic and thermal proper…
Recent experiments of Rosakis et al. have clearly shown that the crack-tip velocity can exceed the shear wave speed for a crack tip propagating between two weakly bonded, identical and isotropic solids under shear-dominated loading. This has motivated recent theoretical and numerical studies on intersonic crack propag…
III. Gas Phase Applications 10 A. Removal of Volatile Organic Compounds (VOCs) from Air 10 B. Purification of Landfill Gas 18 C. Air Conditioning 19 D. Mercury Vapor Adsorption 20 E. Protective Filters 20 F. Flue Gas Cleanup 21 G. Gas Storage on Activated Carbons 31 IV. Water Treatment 34 A. Introduction 34 B. Propert…
Using time correlated single photon counting combined with temperature dependent diffraction limited confocal photoluminescence spectroscopy we accurately determine, for the first time, the intrinsic radiative lifetime of single excitons confined within semiconductor quantum dots. Their lifetime is one (two) orders of…
Based on {\em ab initio} calculation, we propose a new structure for the fundamental excitation of the reconstructed 30$^\circ$ partial dislocation in silicon. This soliton has a rare structure involving a five-fold coordinated atom near the dislocation core. The unique electronic structure of this defect is consisten…
The effect of elevated temperature on the structural stability of Mo/Si, Mo<SUB>2</SUB>C/Si and Mo/Mo<SUB>2</SUB>C/Si/Mo<SUB>2</SUB>C (d<SUB>Mo2C</SUB> equals 0.6 nm) multilayers was investigated. The multilayers deposited by dc magnetron sputtering are annealed at temperatures ranging from 200 degree(s)C to 700 degre…
The RERTR-3 irradiation test was designed to investigate the irradiation behavior of aluminum matrix U-MO alloy dispersion fuels under high-temperature, high-fission-rate conditions. Initial postirradiation examination of RERTR-3 fuel specimens has concentrated on binary U-MO atomized fuels. The rate of matrix aluminu…
Ln a study of wood-inorganic composites. the double-diffusion process of barium phosphate must be mentioned. This has been developed at the Wood Research Institute, Kyoto University. in collaboration with Central Research Laboratory. Matsushita Electric Works Ltd. From a hint that old electrical wood poles buried in t…
Both tri- and tetra(ethylene glycol) linked bis-chromium carbene complexes have been synthesized. These carbene complexes were photolyzed with N-protected imidazolines to give protected azapenams. These were transformed into polyether-linked basket dioxocyclams 4a,b and bis-dioxocyclams 5a,b. These compounds have cavi…
In this paper we first develop an approximate theory for the leading order concentration dependence of the sedimentation coefficient for rodlike colloids/polymers/macromolecules. To first order in volume fraction φ of rods, the sedimentation coefficient is written as 1+αφ. For large aspect ratios L/D (L is the rod len…
The synthesis of 3H-naphtho[2,1-b]pyrans linked to mono-, di-, or terthiophene via an acetylenic junction is described (Schemes 2 and 3). The synthetic approaches involve successive Sonogashira coupling reactions. The photochromic properties in solution of these novel materials were investigated under continuous irrad…
The adsorption mechanism of horse spleen apoferritin on smooth Si(Ti)O2 surfaces was investigated by means of optical wave guide lightmode spectroscopy (OWLS) as well as with atomic force microscopy (AFM), for which images of high resolution were obtained on muscovite mica surfaces. By the use of both experimental met…
In this work we present a simple model for the kinetics of spreading of film-forming liquids on polymer gels. The model is compared with experiments and fair agreement is obtained. The spreading process can be theorized by considering the gel as a thick liquid layer containing a fibrous material (i.e., the polymer net…
The wavelength dependent photochemical cross sections for three adsorbates (OCS, NO, SO2) on roughened silver have been measured, and contrasted with the behavior on Ag(111). Surface roughness leads to significant enhancements of the photochemical cross sections for all three adsorbates. The enhancement exhibits a max…
There is much literature showing that carbon black particles in vulcanized natural \nrubber modify the mobility of the polymer chains as a result of chemical linkages formed \nbet\\veen the two materials. This modified polymer layer is estimated to be about 50 A in \nthickness. Therefore. the modulus and the ultimate…