Materials Literature
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The diffusion-governed melting that occurs when a binary melt is placed in contact with a pure solid is described. It is shown that if the melt superheat is much greater than the solid supercooling, the melt composition at the interface equals that of the solid and so the solid will melt at a rate determined by the th…
In this study mixtures were prepared from solution using and three different precursors for , , and and tris (2, 4‐pentanedionate) Ru(III). Multi‐layer coatings were deposited by spin coating onto fused silica slides with and without an intermediate, 200 nm thick, vacuum deposited Ti film. Samples heat treated at 200,…
An electrical tree is grown in the region of a dielectric subjected to an intensified local electric field. It can be artificially generated in a specimen by using a needle-to-plane electrode configuration. It is characterized by an incubation period which usually tends to decrease with applied voltage. During this pe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew nickel(II)-copper(II) heterodinuclear complexes with hexa- and pentacoordinated nickel(II) ions. Magnetostructural correlationsAlbert Escuer, Ramon Vicente, Joan Ribas, Ramon Costa, and Xavier SolansCite this: Inorg. Chem. 1992, 31, 12, 2627–2633Publication Date (Print):…
A series of segmented polyurethanes (SPUs) with various polyol soft segments was prepared and their hydrolytic degradation and degradation due to lipid sorption was investigated. The hydrolytic degradation of the SPUs was investigated in a papain solution, where it was shown that the SPU based on poly(ethyleneoxide) (…
The method has been proposed for computing Fresnel-type multi-focal lenses on the basis of special-type phase nonlinearity. A multi-focal lens is represented as a mathematical superposition of a thin lens and nonlinearity distorted Fresnel lens. Selection of the nonlinearity type is reduced to the problem of the groov…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel multifunctional initiators for polymerization of 2-oxazolinesShiro Kobayashi, Hiroshi Uyama, Yutaka Narita, and Junichi IshiyamaCite this: Macromolecules 1992, 25, 12, 3232–3236Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published…
Formation of pits near inclusions on 304 stainless steel in (0.1 and 0.3 M ) and (0 and 2 m M ) solutions was investigated by a combination of surface analyses (Auger electron spectroscopy, scanning electron microscopy, and energy dispersive x‐ray analyses) and electrochemical methods. Microlithography techniques were…
The mechanical behavior of model two-dimensional materials is investigated by large-scale molecular-dynamics (MD) simulations on a massively parallel computer. Both a pair-potential and a model embedded-atom many-body potential are examined. A parallel MD algorithm is developed to exploit the architecture of the Conne…
Although deterioration of the magnetic characteristics of silicon steel due to shearing stress has been observed, the degree of deterioration has not previously been assessed quantitatively. With the recent development of a technique for measuring the microscopic distribution of flux density, the effects of stress on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of dilute aqueous formic acid solutionsAnne Belinda Bjerre and Emil SoerensenCite this: Ind. Eng. Chem. Res. 1992, 31, 6, 1574–1577Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June 1992https://pu…
The thermal conductivity of thick-film diamond prepared by chemical vapor deposition (CVD) has been measured with heat flowing in a direction perpendicular to the plane of the film. A laser flash technique with fast infrared detection has been devised for measurement of thin samples with high conductivity. The conduct…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDegradation of nonalternating poly(ester amides)K. E. Gonsalves, X. Chen, and J. A. CameronCite this: Macromolecules 1992, 25, 12, 3309–3312Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June 1992https://pubs.acs.org/do…
Abstract X‐ray photoelectron spectroscopy provides a useful tool for the critical comparison of the chemical nature of the nitrogens corresponding to the various intrinsic redox states of electroactive polypyrrole (PPY) and polyaniline (PAN) and their N‐substituted derivatives. Proton modifications of the PPY nitrogen…
This paper describes the design of shape memory alloy force and displacement actuators based upon the thermomechanical constitutive relations previously developed by the authors. Numerical simulations and design case studies are presented which show the utility and advantages of this method over design methods current…
Les structures de six dimeres de benzoate de cuivre(II) ont ete determinees. Les valeurs de -2J obtenues a partir des mesures de susceptibilite magnetique sont situees dans la gamme 316-350cm -1 . La petite interaction ferromagnetique anormale de l'additif quinoleine , -2J=267cm -1 , serait due a la structure courbee…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPillared clays as superior catalysts for selective catalytic reduction of nitric oxide with ammoniaR. T. Yang, J. P. Chen, E. S. Kikkinides, L. S. Cheng, and J. E. CichanowiczCite this: Ind. Eng. Chem. Res. 1992, 31, 6, 1440–1445Publication Date (Print):June 1, 1992Publicati…
Abstract The characteristic ratio C ∞ and the entanglement molecular weight M e are two key molecular parameters that control melt viscoelasticity, solid mechanical (brittle/ductile) behavior, and adhesion of polymers. We show that the characteristic ratio C ∞ and the entanglement molecular weight M e can be predicted…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSquaraine chemistry. Synthesis, characterization, and optical properties of a class of novel unsymmetrical squaraines: [4-(dimethylamino)phenyl](4'-methoxyphenyl)squaraine and its derivativesKock Yee Law and F. Court BaileyCite this: J. Org. Chem. 1992, 57, 12, 3278–3286Publ…
The reaction between SiC and SiO 2 has been studied in the temperature range 1400–1600 K. A Knudsen cell in conjunction with a vacuum microbalance and a high‐temperature mass spectrometer was used for this study. Two systems were studied—1:1 SiC (2 wt% excess carbon) and SiO 2 ; and 1:1:1 SiC, carbon, and SiO 2 . In b…