Materials Literature
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Abstract Redox cycles are common in nature and likely have a profound effect on the behavior of soils and sediments. This study examined a key component of redox cycles in smectites, namely, the reoxidation process, which has received little attention compared to the reduction process. Unaltered (oxidized) and reoxidi…
3,4,5-tri-fluorobenzene derivatives with different core structures have been synthesized and their physical properties have been determined. Most of the compounds are nematic with broad existence regions. The materials have large dielectric anisotropy, low viscosity, low optical anisotropy and very good voltage holdin…
A series of tests was conducted on two carbon/epoxy systems to assess key factors in the characterization of the thermo-oxidative stability of composite materials. Mechanical properties (open hole compression strength, fracture toughness, and unidirectional compression strength) were determined from specimens aged in…
The phase ordering process following a quench to both the uniaxial and biaxial nematic phases of a quasi-two-dimensional nematic liquid crystal is investigated numerically. The time dependences of the correlation function, structure factor, energy density, and number densities of topological defects are computed. It i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced Doping and Photolithography of Methyl-Substituted PolyanilineG. Venugopal, X. Quan, G. E. Johnson, F. M. Houlihan, E. Chin, and O. NalamasuCite this: Chem. Mater. 1995, 7, 2, 271–276Publication Date (Print):February 1, 1995Publication History Published online1 M…
Alloy melts of the intermetallic compounds FeSi and CoSi were deeply undercooled using the melt fluxing technique. Crystal-growth velocities were measured as a function of undercooling by a high-speed photosensing infrared device. The experimental results were analyzed in the framework of dendrite growth theories with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemistry of Nonplanar Zinc(II) Tetrakis(pentafluorophenyl)porphyrinsJulia A. Hodge, Michael G. Hill, and Harry B. GrayCite this: Inorg. Chem. 1995, 34, 4, 809–812Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTN8: A Structure Analogous to Pentalene, and Other High-Energy Density MinimaMatthew L. Leininger, C. David Sherrill, and Henry F. III SchaeferCite this: J. Phys. Chem. 1995, 99, 8, 2324–2328Publication Date (Print):February 1, 1995Publication History Published online1 May 20…
The development of new computer technologies designed to custom-fit apparel has created a need for quantification of apparel fit characteristics. Fit perception and preference data are needed to improve sizing for ready-to-wear and custom-fitted apparel. Tactile responses of subjects to the fit of pants were investiga…
Sol-gel processing has been widely employed for the fabrication of lead zirconate titanate (PZT) thin films. To successfully optimize thin film material properties for different applications, we must develop a fundamental understanding of the processing-property relationships inherent in the sol-gel fabrication proces…
Abstract A process for treating smectite-bearing rock samples that utilizes LR White resin; allows TEM observation of expanded smectite interlayers and therefore preservation of original rock textures. Examples of several lattice fringe images are shown, including: (1) Dioctahedral smectite layers from a shale (1388.9…
Summary Various formulations and methods of fabricating edible bilayer films consisting of wheat gluten as a structural layer and a thin lipid layer as a moisture barrier were investigated and examined for water vapour permeability. Solid lipids such as beeswax or paraffin wax deposited in a molten state onto the base…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoarsening in Polyethylene-Copolymer BlendsB. Crist and A. R. NesarikarCite this: Macromolecules 1995, 28, 4, 890–896Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995https://doi.org/10.1021/ma00108a014Req…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymorphs of Ln2MoO6: A Neutron Diffraction Investigation of the Crystal Structures of La2MoO6 and Tb2MoO6J. S. Xue, Mark R. Antonio, and L. SoderholmCite this: Chem. Mater. 1995, 7, 2, 333–340Publication Date (Print):February 1, 1995Publication History Published online1 Ma…
The packing in molecular crystals is determined by intermolecular interactions. An understanding of these interactions would enable the design of systems exhibiting effective conductivity and superconductivity. By careful analysis of the shortest intermolecular interactions in the crystal combined with accurate ab‐ini…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLuminescence Properties of Terbium(III) Complexes with 4-Substituted Dipicolinic Acid AnalogsJagannath B. Lamture, Z. Hong Zhou, A. Suresh Kumar, and Theodore G. WenselCite this: Inorg. Chem. 1995, 34, 4, 864–869Publication Date (Print):February 1, 1995Publication History Pu…
ABSTRACT Epiphytic, epilithic, and surface sediment diatom assemblages were identified and enumerated from 35 study ponds on CapeHerschel (78°37″N, 74°42″W), east‐central Ellesmere Island, Canada. All the sites are shallow (maximum depth <2 m), clear, oligotrophic, and freshwater. The ponds freeze completely for 10…
Abstract Bubble growth is a phenomenon encountered in several commercially important processes. A mathematical model presented here describes the growth of bubbles during phase separation of an initially homogeneous polymer‐supercritical fluid mixture, triggered by a sudden pressure drop at constant temperature. It is…
Ferroelectric relaxors belong to a class of materials which possess a local polarization until very high temperature and exhibit a wide frequency range dielectric dispersion around and below ${\mathit{T}}_{\mathrm{max}}$, the temperature of the dielectric maximum. By supposing an exponential-type distribution for the…
Crystals formed in biological tissues often adopt remarkable morphologies that are thought to be determined mainly by the shapes of the confined spaces in which they grow. Another possible way of controlling crystal shape, demonstrated only in vitro, is by means of specialized proteins preferentially interacting with…