Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of surface tungsten oxide species in the tungsten trioxide/alumina supported oxide system from x-ray absorption near-edge spectroscopy and Raman spectroscopyJ. A. Horsley, I. E. Wachs, J. M. Brown, G. H. Via, and F. D. HardcastleCite this: J. Phys. Chem. 1987, 91,…
This book provides an up-to-date treatment of synthetic metals - a rapidly moving area of industrial and academic research. It discusses four classes of conductors having a high metal-like conductivity: synthetic organics, charge-transfer salts, organic polymers, and transition-metal-containing conductors.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBicontinuous microdomain morphology of block copolymers. 1. Tetrapod-network structure of polystyrene-polyisoprene diblock polymersHirokazu Hasegawa, Hideaki Tanaka, Komei Yamasaki, and Takeji HashimotoCite this: Macromolecules 1987, 20, 7, 1651–1662Publication Date (Print):…
Because of their practical interest, wetting phenomena have been the subject of many experimental and theoretical investigations in the past. However, no coherent description of this field had been obtained until recently. Some intriguing paradoxes remained unsolved. For example, once spreading is achieved, the rate o…
Abstract A method was developed to determine the concentrations of oxalate‐extractable Fe(III) and Fe(II) in sediments. Sediment was extracted in acid ammonium oxalate under N 2 . Iron(II) in the extract was determined with ferrozine. Iron(III) in the extract was reduced with hydroxylamine‐hydrochloride, and total Fe…
The term “white-layer” refers to hard layers of material which resist etching and appear featureless and white under the microscope. This paper presents some of the publications on white layer formed during machining and deformation processes. The mechanisms of white layer generation are discussed and to the three tra…
Despite the great technological importance of hydrogen embrittlement in many metals and alloys, and the many investigations thereby motivated, no firm consensus exists on the mechanism in any one case. This review concentrates on the degradation of ferrous alloys by hydrogen, discussing the often conflicting results o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubility of amorphous chromium(III)-iron(III) hydroxide solid solutionsBruce M. Sass and Dhanpat RaiCite this: Inorg. Chem. 1987, 26, 14, 2228–2232Publication Date (Print):July 15, 1987Publication History Published online1 May 2002Published inissue 15 July 1987https://pubs…
Polymers produced by horseradish-peroxidase-catalyzed coupling of phenols have been explored as potential substitutes for phenol-formaldehyde resins. To overcome low substrate solubilities and product molecular weights in water, enzymatic polymerizations in aqueous-organic mixtures have been examined. Peroxidase vigor…
Consolidation experiments conducted on special prepregs made of constant viscosity oils and aligned graphite fibers are reported. Measurements of the deformation behavior of the fibers in the "drained" state (oil impregnated, but zero pressure in the oil) reveal that, to a first approximation, the fiber network can be…
Current transients resulting from metastable pitting events on stainless steel at potentials below the pitting potential are studied. Metastable pits are covered during growth and exhibit a constant current density. Rupture of the cover during metastable growth leads to repassivation of the pit. If a salt film precipi…
A general method for computing the hydrodynamic interactions among N suspended particles, under the condition of vanishingly small particle Reynolds number, is presented. The method accounts for both near-field lubrication effects and the dominant many-body interactions. The many-body hydrodynamic interactions reprodu…
The light trapping properties of textured optical sheets have become of recent interest in photovoltaic energy conversion since light trapping allows a significant reduction in the thickness of active solar cell material. Previous analyses have concentrated on sheets with randomly textured (Lambertian) surfaces. The t…
The effect of composition fluctuations on the microphase separation transition in diblock copolymers is investigated. Such fluctuation corrections, which were neglected in the mean field treatment of Leibler, are found to be significant for the molecular weights usually encountered. The analysis is facilitated by redu…
The authors report measurements of the ultraviolet absorption ascribed to single-substitutional nitrogen in diamond; it is suggested that the ultraviolet absorption arises due to electric dipole transitions localised at three different defects. Uniaxial stress measurements for lines at 4.059 and 4.567 eV occurring at…
Recrystallization solvent effects on second harmonic generation (SHG) of acetylene derivatives are reported. SHG intensities of substituted diphenylacetylene recrystallized from strong polar solvents are enhanced in crystalline states.
A saturated bilayer of hydrogen isotopes has been formed in graphite by implanting protons and deuterons at different energies. Residual gas analysis during thermal desorption strongly suggests that hydrogen atoms recombine locally in the bulk of the damaged material and diffuse to the surface in molecular form. This…
<italic>The Electronic Structure and Chemistry of Solids</italic> shows how the electronic structures and properties of solids can be described in terms familiar to chemists. Recent years have seen a considerable growth of interest in chemical aspects of the electronic structure of solids. The first three chapters giv…
During a controlled mercerization of ramie cellulose, the cellulose I crystal structure is irreversibly converted to cellulose II through several crystalline alkali-cellulose complexes. The crystal structures of three of the complexes -- Na-celluloses I, IIB, and IV -- are providing information on the characteristics…
The hypothesis that all native celluloses are composites of two crystalline allomorphs, Iα and Iβ, is further explored using solid state 13 C NMR techniques. Spectra of several algal and higher plant celluloses and the effects of acid hydrolysis and mechanical beating are investigated. No significant alteration of the…