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 method for analyzing slanted anisotropic gratings is presented. The propagation of electromagnetic waves in the periodic anisotropic media is described by coupled-wave equations in a unified matrix form expressing the coupling of the space harmonics in the grating region. The solution of the equations is reduced to…
We report the first observation to our knowledge of a sharp minimum in the attenuated total reflectivity of a thin metal film between index-matching layers. The resonance is due to the excitation of the long-range surface-plasmon mode on both sides of the thin metal films, as originally discussed by Sarid [Phys. Rev.…
The structure and dynamics of the full unit cell of a protein (bovine pancreatic trypsin inhibitor) containing 4 protein molecules and 560 water molecules have been simulated by using the molecular dynamics method. The obtained structure, atom positional fluctuations, and structure factors are compared with x-ray valu…
The phase diagram of the system ZrO 2 ‐CeO 2 was rein‐vestigated using hydrothermal techniques. Cubic, tetragonal, and monoclinic solid solutions are present in this system. The tetragonal solid solution decomposes to monoclinic and cubic solid solutions by a eutectoid reaction at 1050°50°C. The solubility limits of t…
Amorphous, unstained, frozen-hydrated sections of bacteria provide a faithful high-resolution image of procaryotic cells. Conventional preparation artifacts due to fixation, staining, and dehydration are nonexistent. Freezing damage is avoided by using glucose as a cryoprotectant. Cutting damage on frozen material is…
A theory of melting in two dimensions via the spontaneous generation of grain boundaries is worked out. We find that this mechanism is more favorable than the dislocation unbinding mechanism and that a first-order phase transition always results. The transition goes from strongly first order to weakly first order for…
Computer simulations have been carried out along the 90·2 K isotherm for the adsorption of Kr on graphite. The grand ensemble Monte Carlo technique was used and the adsorbate and adsorbent were represented by widely accepted two body potentials. Additional runs were also carried out in which the third body force, due…
The electronic structure behaviour of Me 2 O 3 oxides (Me = Ti, V, Cr) has been determined from XPS valence band and core level measurements. From Ti to Cr sesquioxide the relative intensity of the 3 d band increases systematically which can be explained by the (atomic) photoelectric cross section and the number of 3…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetailed analysis of the optical absorption and emission spectra of europium(3+) in the trigonal (C3) Eu(DBM)3.H2O systemAndrew F. Kirby and F. S. RichardsonCite this: J. Phys. Chem. 1983, 87, 14, 2544–2556Publication Date (Print):July 1, 1983Publication History Published on…
Amorphous, electrically conducting polymeric films can be deposited from acetonitrile solutions of specific aromatic compounds containing an appropriate electrolyte. Free-standing films peeled off a platinum electrode have electrical conductivities σ between 10−3and 1 Ω−1-cm−1. Polymers resembling the better-known pol…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA versatile phase equilibrium equation of statePaul M. MathiasCite this: Ind. Eng. Chem. Process Des. Dev. 1983, 22, 3, 385–391Publication Date (Print):July 1, 1983Publication History Published online1 May 2002Published inissue 1 July 1983https://pubs.acs.org/doi/10.1021/i20…
The mechanical and conducting properties of free-standing films of polypyrrole toluenesulfonate depend on the preparation conditions. Films prepared in aqueous ethylene glycol solvent mixtures show a variation of two orders of magnitude in the conductivity and of a factor of three in the tensile strength.
Radiationless energy transfer from excited dye molecules to silver islands has been studied. The dye is separated from the metal surface by a thin layer of SiOx. When the spacer layer thickness is increased from d=0, an increase in the luminescence intensity is observed. For the low quantum yield dye Basic Fuchsin, a…
Theoretical calculations are presented for equilibrium concentrations of zinc and oxygen vacancies in ZnO. Results are presented at the sintering temperature, and also at room temperature. Theoretical calculations of reaction constants show that the intrinsic donor is the oxygen vacancy, rather than the zinc interstit…
The preparation and high resolution observation of frozen hydrated thin sections has been studied by transmission electron microscopy (TEM and STEM) on model systems, including pure water, protein solutions, catalase crystals, myelin sheath and various tissues. The state of the ice is determined by electron diffractio…
Defect centers induced by ionizing radiation (50–100-keV x rays, 60Co γ rays) in high purity P-doped silica glass have been observed and elucidated by ESR spectroscopy. Four generic species are well characterized on the basis of the observed 31P hyperfine splittings and g values as defects analogous to PO2−3 (phosphor…
O Glatter and O Kratky 1982 London: Academic x + 515 pp price £43.60 This book is very timely since no comprehensive treatment of small angle x-ray scattering has been published since the 1955 book by Guinier and Fournet, which has been out of print for a long time. Some review papers and conference proceedings have a…
An analysis is made of the many theoretical and experimental studies of layered crystals. The results of this analysis for the particular case of group III-VI semiconductors are used to investigate the features in the electronic and phonon spectra which are due to the manifest structural anisotropy of these compounds.…
The orientational disorder of the NO 2 groups can be described either by Ising spins or by classical continuous spins. Only the latter description can explain the experimentally observed temperature dependence of the wavevector-dependent orientational susceptibility. The deficiency of the Ising spin description is two…
Abstract Nitrobenzooxadiazole-phallacidin binds specifically to the microfilamentous bundles associated with the raphe of a motile diatom, providing evidence for the actin-like nature of the filaments. Since the raphe is implicated in cell locomotion the locomotive force may be generated by the associated microfilamen…