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 present Raman data for the OD stretch mode of 10 mol % HOD in H2O for the liquid phase from −31.5 to 160 °C. We find that an exact isosbestic does not hold, but rather the crossing of isotherms slowly but uniformly changes with temperature. We present an analysis based on Boltzmann statistics which gives evidence f…
The polarization reversal in one-dimensional systems representing ferroelectrics has been studied on the basis of a proposed discrete lattice model. Latent nuclei are assumed to exist, and their influence on the polarization appearing in equilibrium states is discussed. Simulations of polarization reversal have been p…
The adiabatic potential surface for triplet exciton self-trapping and Frenkel-defect pair creation in ${\mathrm{SiO}}_{2}$ has been studied with use of a periodic supercell model and a self-consistent intermediate neglect of the differential overlap method for open shell. The results obtained confirm completely the se…
Thermal conductivities of InSb and GaSb in solid and liquid states were measured with a ceramic probe. Thermal conductivities at melting points were about 17.7 (W/mK) at 803 K for molten InSb and 21.7 (W/mK) at 993 K for molten GaSb. Thermal conductivities were slightly increased with increasing temperature in liquid…
RuS 2 cristallise dans Pa3 - avec a=5,6106 A, Z=4; affinement jusqu'a R=0.021. RuSe 2 cristallise dans Pa3 - avec a=5,9336 A, Z=4; affinement jusqu'a R=0,021. Les distances intermoleculaires des agregats S 2 et Se 2 sont beaucoup plus petites que les sommes des rayons de Van der Waals correspondantes. La longueur de l…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFiber-optic remote sensor for in situ surface-enhanced Raman scattering analysisJob M. Bello, V. Anantha. Narayanan, David L. Stokes, and . Vo Dinh TuanCite this: Anal. Chem. 1990, 62, 22, 2437–2441Publication Date (Print):November 15, 1990Publication History Published onlin…
The change in the chemical surface state of polished Si wafers [p-type, (100) oriented] during storage in air at room temperature was investigated for storage times up to half a year. Measurements were performed by x-ray Photoelectron Spectroscopy (XPS) and High Resolution Electron Energy Loss Spectroscopy (HREELS). I…
Structural models needed in calculations of properties of substitutionally random ${\mathit{A}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathit{B}}_{\mathit{x}}$ alloys are usually constructed by randomly occupying each of the N sites of a periodic cell by A or B. We show that it is possible to design ``special quasira…
An empirical many-body potential-energy expression is developed for hydrocarbons that can model intramolecular chemical bonding in a variety of small hydrocarbon molecules as well as graphite and diamond lattices. The potential function is based on Tersoff's covalent-bonding formalism with additional terms that correc…
Absolute differential and angle-integrated cross sections for elastic electron scattering from mercury were measured at 100, 150 and 300 eV to check the internal consistency of two data sets obtained with a static gas target and an atomic beam. In addition, absolute differential and angle-integrated cross sections for…
A novel approach to producing p-type ZnSe epitaxial layers is reported which involves nitrogen atom beam doping during molecular beam epitaxial growth. Net acceptor concentrations as large as 3.4×1017 cm−3 have been measured in nitrogen atom beam doped ZnSe/GaAs heteroepitaxial layers which represents the highest acce…
Due to the incorporation of mechanical stresses during polymer/metal multilayer device fabrication, strong inter facial adhesion must be maintained in order to sustain mechanical integrity. Here we consider the adhesion of metal deposited onto polymer. In order to assure chemical bonding of the sort leading to strong…
High amplitude radial pulsations of a single bubble in several glycerine and water mixtures were observed in an acoustic stationary wave system at acoustic pressure amplitudes on the order of 150 kPa at 21-25 kHz. Sonoluminescence, a phenomenon generally attributed to the high temperatures generated during the collaps…
The phase boundary of the collapsed phase for a directed polymer on a square lattice in the presence of an attractive wall and monomer-monomer interactions is calculated exactly using transfer-matrix techniques. The position of the multicritical point is also identified.
Abstract The effect of prevulcanisation on the processing properties and network structure of a series of latex compounds containing conventional and efficient vulcanisation (E.V. systems) systems for the manufacture of latex thread was evaluated. Prevulcanisation was effected at 70°C and the extent of crosslinks form…
Abstract A series of poly( p ‐oxybenzoate‐co‐ p ‐phenylene isophthalate)s were prepared by melt polycondensation of p ‐acotoxybenzoic acid, p ‐phenylene diacetate, and isophthalic acid followed by solid‐state polymerization. The solid‐state polymerization not only increased the molecular weight, but also annealed the…
Transparent and conducting SnOx thin films were made by reactive rf magnetron sputtering of Sn in Ar+O2 onto unheated glass. Optical and electrical properties were reconciled with a quantitative model for wide band-gap semiconductors. The theory is based on heavy n doping by doubly ionized oxygen vacancies and ionized…
Photoelectron spectra of calaverite, AuTe 2 , show a Au 5d band extending from -3 to -8 eV below the Fermi energy. Photoemission peaks from Au 4f core levels are sharp, indicating that all Au atoms have the same valency. The binding energies of Au 4f electrons in AuTe 2 and metallic Au are approximately the same. Acco…
We have grown crystalline thin films of LaAlO3 using off-axis rf sputtering from a single stoichiometric target. The films grow epitaxially on SrTiO3 and LaAlO3 (100) substrates as well as on YBa2Cu3O7 thin films. We report on the growth conditions used to make these films, the properties of the films, and the propert…
Abstract Since 4‐vinylbenzyl N,N ‐diethyldithiocarbamate (VBDC) polymer easily cleaves at the C—S bond and generates benzyl radical, graft copolymerization of methyl methacrylate (MMA) or 4‐vinylpyridine (VPy) onto VBDC polymer is easily performed by UV irradiation. The structural analyses of the graft copolymers are…