Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSecond-sphere coordination of transition-metal complexes by calix[4]arenesJerry L. Atwood, G. William Orr, Fumio Hamada, Rebecca L. Vincent, Simon G. Bott, and Kerry D. RobinsonCite this: J. Am. Chem. Soc. 1991, 113, 7, 2760–2761Publication Date (Print):March 1, 1991Publicat…
An experimental investigation has been performed of the Rayleigh linewing in glass-forming liquids in the temperature rangefrom the melting point down to the glass-transition point. The so-called boson peak is found to contribute substantially to the Rayleigh linewing, and to determine the spectral profile of the high…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteractions of nitric oxide and carbon monoxide with palladium and platinum atomsGregory W. Smith and Emily A. CarterCite this: J. Phys. Chem. 1991, 95, 6, 2327–2339Publication Date (Print):March 1, 1991Publication History Published online1 May 2002Published inissue 1 March…
Thin-film nickel-titanium shape memory alloy has been vacuum sputter deposited, characterized by crystallographic, electrical, and mechanical tests, and incorporated as an actuator in miniature devices. The composition and heat treatment of the film are critical as contamination by oxygen and other species affects the…
We consider the statistical mechanics of a system of semiflexible chains, which can represent polymer liquid crystals, long-chain biomolecules, stiff wormlike micelles, or columns of discotic liquid crystals. Semiflexible chains can order in a hexagonal lattice (also called a columnar or canonic phase), and they can f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIon association and electric field effects on electron hopping in redox polymers. Application to the tris(2,2'-bipyridine)osmium(3+)/tris(2,2'-bipyridine)osmium(2+) couple in NafionFred C. Anson, David N. Blauch, Jean Michel Saveant, and Ching Fong ShuCite this: J. Am. Chem.…
The reaction between nitrogen gas and the series of R2Fe17 intermetallic compounds is studied by thermopiezic analysis on micron-size powders. Nitrogen diffusion in the range 300–550 °C can be represented by an activated interstitial diffusion process D=D0e−Em/kT with D0=1.95×10−10 m2 s−1 and an activation energy Em=0…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrically conductive polyaniline-poly(vinyl alcohol) composite films: physical properties and morphological structuresShow An Chen and Woei Guwn FangCite this: Macromolecules 1991, 24, 6, 1242–1248Publication Date (Print):March 1, 1991Publication History Published online1…
Fluorescence and site-selective excitation spectra of chromium-activated forsterite at 10 K are reported. It is found that a high-field ${\mathrm{Cr}}^{3+}$ site in inversion symmetry emits sharp ${\mathit{R}}_{1}$ line fluorescence, while a low field ${\mathrm{Cr}}^{3+}$ site in mirror symmetry produces $^{4}$${\math…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanical properties and force field parameters for polyethylene crystalNaoki Karasawa, Siddharth Dasgupta, and William A. Goddard IIICite this: J. Phys. Chem. 1991, 95, 6, 2260–2272Publication Date (Print):March 1, 1991Publication History Published online1 May 2002Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the conformational behavior of an ABC triblock copolymer moleculeY. S. Sdranis and M. K. KosmasCite this: Macromolecules 1991, 24, 6, 1341–1351Publication Date (Print):March 1, 1991Publication History Published online1 May 2002Published inissue 1 March 1991https://pubs.ac…
The bulk magnetic properties of sintered materials are treated as those of a standard magnetic material with a permeability dependent on the porosity. If J/sub c/ is expressed as a function of the internal H instead of the applied field, it is much more constant. The flux profile technique can then be used to extract…
The AgI thermal transition of the \ensuremath{\beta} phase (wurtzite structure) to the \ensuremath{\alpha} phase (body-centered-cubic structure) occurred at a higher temperature (162 \ifmmode^\circ\else\textdegree\fi{}C) than that previously reported (\ensuremath{\sim}147 \ifmmode^\circ\else\textdegree\fi{}C). It is b…
The synthesis (up to the 10‐g scale) and purification of alkyl‐ and methoxyalkyl‐substituted [1.1.1]propellanes are described.
The core loss for a magnetic material under excitation can be estimated from the flux density versus the field-strength loops or B-H loops. A method is presented for predicting the position, size, and number of minor loops formed in the B-H loop, while harmonics of known magnitude and phase angle occur along with the…
Abstract Diamond‐like carbon films have been deposited from ternary mixtures of butadiene, hydrogen and argon in a parallel plate plasma reactor at constant pressure and power. These films have been etched in O 2 and CF 4 /O 2 plasma discharges. A new linear relationship between the composition of the deposition gas m…
Abstract A number of different techniques were applied to measure carbon-black-surface reactivity and the level of black-polymer interaction in four different elastomer systems (SBR, IIR, NR, and NBR) representing differences in unsaturation, crystallinity and polarity. Known within-grade surface activity variations w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymer blends and polymer solutions: a Born-Green-Yvon integral equation treatmentJ. E. G. LipsonCite this: Macromolecules 1991, 24, 6, 1334–1340Publication Date (Print):March 1, 1991Publication History Published online1 May 2002Published inissue 1 March 1991https://pubs.ac…
Berreman’s 4 × 4 matrix method is used to study the optical properties of special configurations. Under certain conditions the expression for the characteristic matrix of a homogeneous anisotropic slab can be greatly simplified. If these conditions are also fulfilled for each slab of a multilayered system, relations b…
Thin vanadium oxide films were made by vacuum evaporation followed by the annealing posttreatment in the presence of air. The thickness increased by a factor as large as approximately 2.3 on oxidation. Electron diffractograms indicated a bcc ? monoclinic transformation during the annealing, and electron micrographs sh…