Materials Literature
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By exploiting nuclear magnetic resonance (NMR) techniques along with novel applications of saturation difference analysis, we deciphered the functions of the previously uncharacterized products of three bacterial genes, rbsD, fucU, and yiiL, which are part of the ribose, fucose, and rhamnose operons of Escherichia col…
Stearic acid was incorporated into whey protein through emulsification to produce films. Whey protein films were prepared by dispersing 6.5% protein in distilled water. Glycerol was the plasticizer agent. Stearic acid was added at different levels (0.0 to 1.0%) and the films were analyzed at different pHs (5.0, 6.0, 7…
This paper presents a new processing method to produce nanotube reinforced composites by using single-walled nanotube (SWNT) bucky paper as reinforcement. The SWNT bucky paper is an entangled mat of SWNTs, which is a highly porous mesh structure. To successfully produce SWNT bucky paper reinforced composites, it is es…
Solutions of alkanethiol-protected Au nanoparticles undergo a slow aging process over a period of several days, which dramatically reduces their reactivity in a place-exchange reaction with disulfides. This behavior was tentatively attributed to the reorganization of the most reactive binding sites (e.g., defect sites…
Resonant photon absorption in the GHz range was observed via low-temperature micro-SQUID magnetization measurements of the spin ground state S = 1/2 of the molecular complex V 15 . A simple single-molecule interpretation is proposed. The line width essentially results from intra-molecular hyperfine interaction. The re…
Multiple new materials are being adopted by the semiconductor industry at a rapid rate for both semiconductor devices and packages. These advances are driving significant investigation into the impact of these materials on device and package reliability. Active investigation is focused on the impact of back-end-of-lin…
The LaMg12-based nanocrystalline alloys were prepared by ball-milling as-cast LaMg12 alloy with Ni powders. The electrochemical charging and discharging in KOH solution of the ball-milled LaMg12-based nanocrystalline alloys succeeded due to the formation of the metallic Ni particles highly dispersed through nanocrysta…
Abstract Intercalative hybrid materials, comprised of polypyrrole (PPy) chains interleaved with the layers of MoO3, have been synthesized using concomitant ion exchange reaction. The (PPy)xMoO3-pressed pellets show a semiconducting-like transport with an activation energy of 0.2 eV. The MoO3 host layers play a dominan…
Five fluid tilted mesophases are observed in a series of achiral banana-shaped compounds. The terminal chain length is the pertinent molecular parameter which induces the polymorphism change. All the phases, refer to tilted lamellar structure without in-plane order in the layers. The observation of monolayer, bilayer,…
Adlayers of 15-crown-5-ether-substituted cobalt(II) phthalocyanine (CoCRPc) were prepared by immersion of either Au(111) or Au(100) substrate into benzene-ethanol (9:1 v/v) mixed solutions containing CoCRPc. In situ STM imaging was carried out after transferring the CoCRPc-modified Au crystals into aqueous HClO(4) sol…
Because of the deleterious effects of sulfur emissions from motor vehicles, government regulatory agencies in several countries have been controlling and gradually reducing the sulfur content of fuels. This article discusses some of the test methods that have been developed for sulfur determination in fuels. Four test…
Abstract SrTiO 3 was plastically deformed in compression along different crystal axes between room temperature and 1800 K. Data obtained from deformation experiments as well as from light optical and electron optical studies are presented. Irrespective of the compression axis orientation, the material exhibits a stron…
Abstract The crystal structures of the clathrate forms of syndiotactic polystyrene (s‐PS), poly ( p ‐methylstyrene) (s‐PPMS) and poly ( m ‐methylstyrene) (s‐PMMS) containing guest molecules having widely different steric hindrance are compared in detail. Common features and differences concerning the packing of the ch…
Article Grain boundary characterization and grain size measurement in an ultrafine-grained steel was published on June 1, 2004 in the journal International Journal of Materials Research (volume 95, issue 6).
Results of dielectric studies of smectogenic members of the nCB (4’-alkyl-4-cyanobiphenyl, n = 9÷12) homologous series are presented. The dielectric relaxation measurements were performed in the isotropic (Is) and smectic A (SA) phases. The relaxation times characterizing the molecular rotations around the short axes…
Chains of (TiO6) octahedra occur in several crystal structures as fundamental building blocks, confirming the tendency of self-polymerization for (TiO6) octahedra. There are two topologically distinct types of chains based on linkage of (TiO6) octahedra, corner-sharing chains and edge-sharing chains. In this paper, we…
Optical phenomena accompanying the preflashover along a planar metal-alumina-metal structure were investigated under stepped AC voltage in vacuum. Two kinds of electrode contacts with and without sputtered gold films were employed. For sputtered alumina, the luminescence became observable at /spl sim/1 kV/sub peak/, a…
The magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFe xO 3 (0.1 < x <0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magnetization. At low concentrations (x <0.1), the system displays essentially para-to-ferromagnetic transitions as the temperature is dec…
Leitfähige Hybride: Der hier beschriebene Weg zu molekularen Metallen, die sperrige und hoch geladene Polyoxometallate enthalten, beruht auf der Kombination des Donors Bis(ethylendioxo)tetrathiafulvalen (BEDO-TTF) (siehe Bild, Kugel-Stab-Modell) mit anorganischen Schichten aus Keggin-Polyoxometallaten (Polyederdarstel…
Abstract Epoxy resin‐layered silicate nanocomposites (ER‐LSN) were successfully synthesized using pre‐intercalated novolac resin‐layered silicate nanocomposites (NR‐LSN) as epoxy hardeners to develop novel formulations for copper‐clad laminate sheets (CCLS) with enhanced properties. We used melt, melt‐ultrasonic, solu…