Materials Literature
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The passivation of copper anodes due to precipitation of copper sulfate on the anode surface was investigated as a function of electrolyte composition and temperature, and of anode composition. The slime layer present on the anode surface was shown to be the primary factor in causing passivation by inhibiting the diff…
Abstract Reaction injection molding includes aspects of polymerization reactor analysis as well as melt injection molding. Processing can be broken down into several unit operations: metering and machine performance, impingement mixing, mold filling, curing and mold design. Commercial RIM machines have been used succe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTZinc porphyrin sensitized reduction of simple and functional quinones in micellar systemsMarie Paule Pileni and Michael GraetzelCite this: J. Phys. Chem. 1980, 84, 14, 1822–1825Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Published iniss…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of [N(CH3)4]2[Mo2O2S2(S2)2]: a compound with two S22- ligandsWilliam Clegg, Nageswaran Mohan, Achim Mueller, Axel Neumann, Walter Rittner, and George M. SheldrickCite this: Inorg. Chem. 1980, 19, 7, 2066–2069Publication Date (Print):July 1, 19…
Hydrogen atoms in ferroelectric phase of CsH 2 PO 4 have been located from low temperature neutron diffraction experiment. Chains of hydrogen bonds extending to both the crystallographic b - and c -axes are confirmed. The hydrogen atom in a shorter O–H··O bond becomes ordered at low temperature phase with bond length…
Abstract Bildungsenthalpien Δ H f und geometrische Ringspannungen E g. Sp. für Cyclooctin ( 1 ) und die drei isomeren Cyclooctenine 5 – 7 werden nach der MINDO/2‐Methode auf der Basis vollständiger Geometrie‐Optimierungen berechnet. Mit den Frequenzen der CC‐Valenzschwingungen (Abb. 4) und mit den 13 C‐Verschiebungsw…
Isochronal annealing experiments on dc-sputtered indium tin oxide (ITO) films in inert (N2), reducing (N2/H2) and oxidizing atmospheres were cumulatively performed over the 50→500→50 °C range. Three anneal regimes have been identified. In region I, TA=50→200 °C, crystallization occurs, resulting in a sharp drop in she…
A clean Si(111) surface showing a 7×7 superlattice structure has been investigated in detail by RHEED with changes of azimuthal angle, glancing angle, and surface temperature. For the 7×7 structure, the mean intensity distribution of the reciprocal lattice rods was estimated from the intensity analysis of various RHEE…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRheooptical Studies of Racemic Poly(γ-benzyl glutamate) Liquid CrystalsTadahiro Asada, Hiromochi Muramatsu, Ryoji Watanabe, and Shigeharu OnogiCite this: Macromolecules 1980, 13, 4, 867–871Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Pub…
The crystallographic orientation of rf reactively sputtered ZnO has been characterized by x-ray diffraction after postdeposition heat treatment. Diffractometer measurements were made on as-deposited films as well as on films which were annealed up to 700°C. The heat treatment accounted for improved crystallite orienta…
Abstract UPS studies (21.2 and 40.8 eV) are performed on BaTiO 3 (001) and SrTiO 3 (100) surfaces. In both the compounds there is an enhanced emission at the top of the valence band for hv = 21.2 eV, which cannot be explained with the existing theoretical bulk densities of states. From the results of angle‐dependent U…
Abstract The small‐angle x‐ray scattering (SAXS) pattern from a cesium salt of a 6.1 mole % ethylenemethacrylic acid (E‐MAA) copolymer is shown to become azimuthally dependent on sample elongation. SAXS was measured using the Oak Ridge National Laboratory (ORNL) spectrometer with pinhole collimation and a two‐dimensio…
Magnetic domains of barium ferrite particles less than 10 to 1 µm in size which are on surfaces of as-sintered blocks have been observed by colloid-SEM method, a modified Bitter method, with magnifications from 20000 to 45000. The number of domains in a particle decreases with reduction of particle size on average. Be…
The magnetic structure of ${\mathrm{Zn}}_{x}{\mathrm{Fe}}_{3\ensuremath{-}x}{\mathrm{O}}_{4}(0<~x<~0.8)$ has been investigated by $^{57}\mathrm{Fe}$ M\"ossbauer spectroscopy at $T=4.2$ K. A localized canting model that considers the configurational details of the neighbors has been developed for the analyses of…
We have observed a new nonlinear light amplification process in a nematic liquid crystal, p-methoxybenzylidene-p-n-butylaniline, maintained above the Frederiks transition by a magnetic field. Substantial probe-beam gain (10% or more) was observed for a moderate same-frequency pump beam of intensity on the order of W/c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIron pentacarbonyl decomposition over Grafoil. Production of small metallic iron particlesJ. Phillips, B. Clausen, and J. A. DumesicCite this: J. Phys. Chem. 1980, 84, 14, 1814–1822Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Published i…
The structure of the proteolytic enzyme, actinidin, has been refined by fast Fourier least-squares methods [Agarwal (1978), Acta Cryst. A34, 791-809]. Atomic positions were refined independently by the least-squares program, with the whole protein structure being regularized at intervals. After an initial refinement p…
Electrical conductivity and relaxation data were measured for glasses of composition 0.242[ X K 2 O+(1‐ X )Na 2 O]‐0.758SiO 2 from 25° to 205°C and in the dilute Na + ion composition range X = 0.9 to 1. The decrease in electrical conductivity σ when the majority alkali K + is replaced with the foreign alkali Na + is m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of bis(phthalocyaninato)neodymium(III)K. Kasuga, M. Tsutsui, R. C. Petterson, K. Tatsumi, N. Van Opdenbosch, G. Pepe, and E. F. Meyer Jr.Cite this: J. Am. Chem. Soc. 1980, 102, 14, 4835–4836Publication Date (Print):July 1, 1980Publication History Published online1…
Based on an exact solution of the pertinent boundary-value problem, a method is presented for finding the electromagnetic fields scattered or guided by lossy dielectric gratings having arbitrary profiles. This method unifies the treatment of both perpendicular (TE) and parallel (TM) polarizations by expressing the fie…