Materials Literature
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The physical processes occurring during partial discharges in voids in dielectrics have been studied utilizing fast oscilloscopic techniques to observe the buildup and decay of current as a function of time for single discharges. A key parameter is the overvoltage at breakdown, determined for time-dependent voltages b…
Thin films of the phase transition material vanadium dioxide (VO2) were deposited by thermal oxidation of e-beam evaporated vanadium on a variety of bulk materials. Substrate effects on transition temperature are confirmed as being due to a mismatch between film and substrate thermal expansion coefficients. Decreasing…
Abstract Double-chain alkyl amphiphiles with oligo-l-glutamic acid-head group were prepared. These compounds were dispersed in water at pH 8 to 9 to form bilayer aggregates, in which helical and hollow structures were contained. New CD bands were observed in the solution.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolylactones. 1. Copolymerizations of glycolide and iε-caprolactoneHans R. Kricheldorf, Thomas Mang, and J. Michael JonteCite this: Macromolecules 1984, 17, 10, 2173–2181Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1…
The phenomenon of water-tree degradation of polyolefin insulating materials is reviewed with particular emphasis on the materials aspect of the problem. Specific topics include: methods of producing water trees in the laboratory, water-tree morphology, the nature of tree growth curves, and the effects of temperature,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSodium hypochlorite: a convenient oxygen source for olefin epoxidation catalyzed by (porphyrinato)manganese complexesBernard Meunier, Elisabeth Guilmet, Maria Eliza De Carvalho, and Rene PoilblancCite this: J. Am. Chem. Soc. 1984, 106, 22, 6668–6676Publication Date (Print):O…
Abstract : The book presents a survey and review of relaxation phenomena in many research fields. Contents: Viscous Liquids and Glasses; Relaxation in Polymers; Metallic Glasses; Spin Glasses; Electrical Relaxations in Ionic Conductors; and Theory and Models.
Silk fibroin is composed of heavy (H-) and light (L-) chains linked with disulfide bond(s). This paper describes immunological properties of fibroin H- and L-chains. Antiserum against H-chain, L-chain or whole fibroin could be obtained, indicating that each of these polypeptides is antigenic in rabbits. The antiserum…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Abstract The 10-Å clay components of sedimentary rocks (“illites”) are commonly mixtures of 100% nonexpandable illite and an ordered illite/smectite mixed-layer mineral. If the proportion of the illite/ smectite in a mixture is sufficient to produce a measurable reflection between 33–35°2 θ (CuK α radiation) that is n…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotosensitized electron injection in colloidal semiconductorsJacques Moser and Michael GraetzelCite this: J. Am. Chem. Soc. 1984, 106, 22, 6557–6564Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 October 1984https://…
Abstract Extremely small CdS particles were prepared in propanol−2 solution at − 78°C and in aqueous solution in the presence of sodium hexametaphosphate at room temperature. These colloids are colorless. Their UV absorption spectra exhibit several maxima. Aging of the colloids is accompanied by intensity variations i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface spectroscopic characterization of manganese/aluminum oxide catalystsBrian R. Strohmeier and David M. HerculesCite this: J. Phys. Chem. 1984, 88, 21, 4922–4929Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 Oct…
Abstract Wood pulp fibers possess strength and modulus properties which compare favorably with glass fibers when the differences in fiber densities are considered. Softwood pulp fibers with fiber aspect ratios near 100 are readily dispersed into high‐density polyethylene or isotactic polypropylene with the aid of carb…
Lev Mikhaylovich Blinov 1983 Chichester: John Wiley xxi + 341 pp price £35.95 ISBN 0 471 10231 8 This is a survey of the properties of liquid crystals, ranging much more widely than its title suggests. As well as describing the astonishing variety of behaviour displayed when electromagnetic fields act on liquid crysta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleTheoretical studies of surface enhanced Raman scatteringGeorge C. SchatzCite this: Acc. Chem. Res. 1984, 17, 10, 370–376Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 October 1984https://pubs.acs.org/doi/10.1021/ar00106a…
Inhomogeneities in thin films have a large influence on the optical transmission spectrum. If not corrected for, this may lead to too large calculated values for the absorption coefficient or the apparent presence of an absorption band tail as well as serious errors in the values of refractive index and thickness. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotophysical effects of metal-carbon .sigma. bonds in ortho-metalated complexes of iridium(III) and rhodium(III)S. Sprouse, K. A. King, P. J. Spellane, and Richard J. WattsCite this: J. Am. Chem. Soc. 1984, 106, 22, 6647–6653Publication Date (Print):October 1, 1984Publicati…
Laser vaporization of a substrate within the throat of a pulsed nozzle is used to generate a supersonic beam of carbon clusters. The neutral cluster beam is probed downstream by UV laser photoionization with time-of-flight mass analysis of the resulting photoions. Using graphite as the substrate, carbon clusters Cn fo…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More