Materials Literature
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Abstract Actual procedures for the preparation of black phosphorus single crystals by a bismuth flux method have been explored and the details are described. The anisotropy and the temperature dependence of the electrical conductivity and the Raman scattering spectra of the crystals obtained by the above-method have b…
BO-PP films have fairly different morphologies to those of non-oriented PP films. These morphological differences were found to originate from the orientation of the crystalline and amorphous phases. The orientation of the amorphous phase causes a pronounced decrease observed both in ionic conduction and in dielectric…
A model has been developed for the prediction of NOx emissions from combustion turbines. Thermal, prompt, and fuel NO are all treated and are all assumed to be formed at a stoichiometric equivalence ratio. Prompt and fuel NO are assumed to be fast with respect to thermal NO and establish a finite concentration of NO a…
A comparative study was made between the moisture absorption behaviours of sisal and jute fibre composites in an epoxy matrix under immersion conditions. Sisal fibres, in spite of possessing more compact structure than jute fibres, exhibited higher moisture absorp tion levels in their composite form, contrary to expec…
Hydration of CaAl 2 O 4 (CA) was studied by calorimetry, analysis of the liquid phase, measurement of the combined water, and electron microscopy. During the induction period, the solution remains almost unchanged and is equilibrated temporarily with both superficially intrusion‐hydrated CA particles and Al(OH) 3 gel…
Poly‐1,4‐dimethoxybenzene has been synthesized by the anodic oxidation of 1,4‐dimethoxybenzene in aprotic electrolytes. The black polymer is a doped semiconductor as formed. This material is converted to polymeric (oligomeric) hydroquinone and quinone. The polymers are insoluble in all common solvents except for the p…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTEXAFS evidence for direct metal-metal bonding in reduced rhodium/titania catalystsStanley Sakellson, Martin McMillan, and Gary L. HallerCite this: J. Phys. Chem. 1986, 90, 9, 1733–1736Publication Date (Print):April 1, 1986Publication History Published online1 May 2002Published i…
Abstract Multivariate statistical analyses of geochemical, mineralogical, and cation-exchange capacity (CEC) data from a Venezuelan oil well were used to construct a model which relates elemental concentrations to mineral abundances. An r-mode factor analysis showed that most of the variance could be accounted for by…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFactors influencing Jahn-Teller distortions in six-coordinate copper(II) and low-spin nickel(II) complexesRobert J. Deeth and Michael A. HitchmanCite this: Inorg. Chem. 1986, 25, 8, 1225–1233Publication Date (Print):April 1, 1986Publication History Published online1 May 2002…
The equilibrium segregation A (dissolved) = A (segregated), where A = C, Si, Sn, N, P, O, S … is studied for binary systems Fe-A in the stability range of the α-solid solution using surface-analytical methods. On the surfaces ordered structures were observed by LEED and surface concentrations were determined by AES –…
Abstract The FeCl 3 test is applied to an increasing extent for examining the resistance to pitting and crevice corrosion. Two methods having proved their value are described, the chemical properties of the FeCl 3 solution with regard to hydrolysis, pH and redox potential behaviour at various test temperatures are set…
The electronic and photoelectrochemical properties of the n‐type spinel oxides consisting of Zn‐Ti‐Fe are studied. The composition systems that give the single phase of the spinel structure are and . The conductivities of the former oxides are governed by the hopping mechanism between Fe 2+ and Fe 3+ at the octahedral…
Abstract The southern San Joaquin Valley contains more than 7 km of sedimentary fill, largely Miocene and younger in age. Ancient depositional environments ranged from alluvial fans at the basin margins to turbidite fans toward the basin center. Mixed-layer illite/smectite (I/S) dominates the <2- μ m fraction of Mi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSmall system size artifacts in the molecular dynamics simulation of homogeneous crystal nucleation in supercooled atomic liquidsJ. Dana Honeycutt and Hans C. AndersenCite this: J. Phys. Chem. 1986, 90, 8, 1585–1589Publication Date (Print):April 1, 1986Publication History Pub…
Stony corals calcify by nucleation and growth of aragonite fibers on seed nuclei packets produced by the coral. Aragonite fibers arrange into polyciystalline bundles that lift the coral upward duringfiber growth, entrapping fibrils and tissue sheets, from the undersurface of the calicoblastic epithelium, between growi…
Abstract A layer-by-layer mechanism explains important features of mixed-layer clay minerals formed during the illitization of smectite, including the occurrence of randomly interstratified illite/smectite, the transition to ordered interstratifications, and the development of long-range ordering. A variety of solid-s…
Abundances have been determined for Li in early F field dwarfs in order to determine the initial Li content for Population I stars. Reticon spectra were obtained at the coudé spectrograph of the CFH telescope of 75 F0 - F5 dwarfs with a spectral resolution of 0.11 Å. High S/N values allowed the observation of weak fea…
Close examination of published measurements of absolute configuration in inorganic crystals has revealed many mistakes, and only a small number of published correlations between optical rotation and chirality of crystal structure can be trusted. The sense of rotation of light is here traced to the hand of specific hel…
Abstract The morphology of illite/smectite (I/S) from deeply buried bentonites and hydrothermally altered Tertiary volcanic rocks from Japan changes in parallel with the proportion of expandable layers in the I/S. As viewed by scanning electron microscopy, the morphologies range from the typical “cornflake,” “maple le…
The electrical conductivities of carbon-black-filled low-density polyethylene (LDPE), poly(methyl methacrylate) (PMMA), and poly(vinyl chloride)-vinyl acetate (PVC/ VAc) copolymer were measured as functions of carbon content and melt viscosity of the matrix at the temperatures at which the composites were prepared. Sh…