Materials Literature
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During the service life of gas-filled cellular plastics ( GFCP), air diffuses into the foam cells and the gaseous blowing agent diffuses out, each at a rate that depends on the type of polymer and temperature. This process, which reduces the effectiveness of insulation, is known as aging. This paper presents a model f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural and magnetic properties of dimorpholinium hexahalodicuprate(II) salts: study of two planar Cu2X62- dimersBrian Scott, Urs Geiser, Roger D. Willett, Baldev Patyal, Christopher P. Landee, Robert E. Greeney, Tiziano Manfredini, Gian Carlo Pellacani, Anna Bonamartini…
The authors formulate and solve the problem of sizing power/ground (p/g) nets in integrated circuits composed of modules, where the nets are routed as trees in the channels between the modules. Constraints are developed to maintain proper logic levels and switching speed, to prevent electromigration, and to satisfy ce…
Most inorganic polymers have been developed for high thermal stability but there is considerable potential for obtaining low surface energy polymers as well. Semi-inorganic polymers with fluorocarbon and hydrocarbon pendent groups is the most promising area. The well-established example of silicone polymers is used to…
Abstract The performance of the industrial HCN synthesis Andrussow reactor on a Pt gauze catalyst is simulated using rate equations for 13 simultaneous unimolecular and bimolecular surface reactions. Individual rates have been determined experimentally for reactants, intermediates, and products on polycrystalline Pt,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface extended x-ray absorption fine structure of underpotentially deposited silver on gold(111) electrodesJ. H. White, M. J. Albarelli, H. D. Abruna, L. Blum, O. R. Melroy, M. G. Samant, G. L. Borges, and J. G. Gordon IICite this: J. Phys. Chem. 1988, 92, 15, 4432–4436Pub…
POSIT is a computer program package for the determination of the approximate structure of small organic molecules using known molecular fragments. The orientation and the translation vector of this fragment are determined and refined by a special R-value analysis. In contrast to other molecular replacement methods, on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPrecipitation of calcium carbonate in aqueous solutions in the presence of oxalate anionsEfthimios K. Giannimaras and Petros G. KoutsoukosCite this: Langmuir 1988, 4, 4, 855–861Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published iniss…
Rapid progress has been taken place in phonon spectroscopy since the review by Bron in 1980. The authors restrict themselves to acoustic branch phonons, and describe the improvements in technique that make it now possible to study phonons in some materials right up to the Brillouin zone edge. Major advances have taken…
Transition-metal ions and stable organic radicals, such as the nitroxides, can form clusters containing variable numbers of spins. For instance finite clusters containing from 2 to 12 spins have been reported, as well as infinite arrays2 The nitronyl nitroxides are particularly versatile in giving different arrangemen…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn extended universal coexistence curve for polymer solutionsBenjamin Chu and Zhulun WangCite this: Macromolecules 1988, 21, 7, 2283–2286Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron hopping in one dimension: mixed conductor membranesRichard P. BuckCite this: J. Phys. Chem. 1988, 92, 14, 4196–4200Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org/doi/10.1021/j10032…
The extensive nonstoichiometry in the 〈U 1– z Gd z O 2± x 〉 phase was investigated experimentally and the data are represented by a chemical thermodynamic method. The experimental ranges of temperature, oxygen potential, and z were 1273 to 1773 K, 0 to −600 kJ/mol, and 0.1 to 0.8, respectively. For hypostoichiometry,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and x-ray structure of a symmetrical bis(.eta.5-dicarbollide) aluminum sandwichMarc A. Bandman, Carolyn B. Knobler, and M. Frederick HawthorneCite this: Inorg. Chem. 1988, 27, 14, 2399–2400Publication Date (Print):July 1, 1988Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrolytic trimer of chromium(III). Synthesis through chromite cleavage and use in the preparation of the "active" trimer hydroxideLeone Spiccia, Werner Marty, and Rudolf GiovanoliCite this: Inorg. Chem. 1988, 27, 15, 2660–2666Publication Date (Print):July 1, 1988Publication…
The microstructure and crystal structure of bismuth oxide phases of as‐sintered and additionally heat‐treated ZnO varistor ceramics was examined by means of transmission electron microscopy and X‐ray powder diffraction. Grains of β‐Bi 2 O 3 present in as‐sintered samples were found to consist of two types of domains w…
Abstract Following a rapid overview of the various mechanisms involved in the process of polymer adhesion to metals, modelling is attempted in order to describe, at molecular scale, the metal—polymer interface in its technological reality. In particular, the concept of an active site is explained and the role of these…
We present a Raman scattering study of ultrathin SiGe superlattices. The spectra show evidence for the formation of superlattice structures with disordered interfaces. We explain the Raman peak energies in terms of strain and confinement effects and present a simple model for the Raman spectrum, from which we obtain s…
From a quenched, melt-spun ribbon of a specimen of Al76Mn24, bulk composition, the decagonal phase and a closely related ‘Al3Mn’ phase have been examined using analytical electron microscopic techniques. It is proposed that descriptions of the decagonal phase by analogy to an icosahedral axial system be abandoned and…