Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman spectroscopy of calcium phosphate glasses with varying calcium oxide modifier concentrationsJeanne E. Pemberton, Lida Latifzadeh, Joseph P. Fletcher, and Subhash H. RisbudCite this: Chem. Mater. 1991, 3, 1, 195–200Publication Date (Print):January 1, 1991Publication His…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResolution and analysis of the components in dual emission of mixed-chelate/ortho-metalate complexes of iridium(III)Ashley P. Wilde, Kevin A. King, and Richard J. WattsCite this: J. Phys. Chem. 1991, 95, 2, 629–634Publication Date (Print):January 1, 1991Publication History P…
An efficient method allowing the transformer flux offset and exciting-current waveform to be determined for combined AC and geomagnetically induced current (GIC) excitation, without lengthy time-domain simulations, is described. This iterative approach solves for the equilibrium saturation condition using lumped-param…
A mercury ultramicroelectrode (Hg-UME) has been prepared by electrochemical deposition of mercury on an iridium substrate. The iridium UMEs can be prepared with radii of l-20 pm using a molten salt etching solution of NaCl and NaNOs. The Ir and Hg UMEs have been characterized by cyclic voltammetry and chronoamperometr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDecomposition of ozone on a silver catalystSeiichiro Imamura, Masaaki Ikebata, Tomoyasu Ito, and Takashi OgitaCite this: Ind. Eng. Chem. Res. 1991, 30, 1, 217–221Publication Date (Print):January 1, 1991Publication History Published online1 May 2002Published inissue 1 January…
Abstract
Heteropolyanions [WM3(H2O)2(XW9O34)2]12–(X = M = Zn or CoII) form on ageing concentrated solutions of sodium salts of the well known polyanions [Zn(H2O)(ZnW11O39)]8– and [CoII(H2O)(CoIIW11O39)]8–. Their high-yield syntheses are reported. An X-ray crystallographic study of Na12[WZn3(H2O)2(ZnW9O34)2]·46H2O [Space group…
1. Introduction (F.N. Cogswell). The keys to thermoplastic composites. Envoi. Bibliography. 2. Physical and mechanical properties of high-performance thermoplastic polymers and their composites (N.J. Johnston, T.W. Towell, P.M. Hergenrother). General features of thermoplastic matrices. Neat resins and properties. Comp…
An electroactive polymer with a lowered band gap has been obtained from the monomer cyclopenta[2,1-b;3,4-b′]dithiophen-4-one.
An electroactive polymer with a bandgap of ≈0.8 eV has been obtained from the monomer 4-dicyanomethylene-4H-cyclopenta[2,1-b;3,4-b′]dithiophene.
Recent studies of self-diffusion and impurity diffusion in α- and β-titanium are reviewed. The transition metal elements and phosphorus exhibit fast diffusion in α-Ti, which are three to five orders of magnitude faster than the self-diffusion. The mechanism of the fast diffusion is discussed on the basis of the severa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLayered structure of crystalline compounds silver thiolates (AgSR)Ian G. Dance, Keith J. Fisher, R. M. Herath Banda, and Marcia L. ScudderCite this: Inorg. Chem. 1991, 30, 2, 183–187Publication Date (Print):January 1, 1991Publication History Published online1 May 2002Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of quantum-size semiconductor particles in a layered metal phosphonate host latticeGuang Cao, L. K. Rabenberg, Christine M. Nunn, and Thomas E. MalloukCite this: Chem. Mater. 1991, 3, 1, 149–156Publication Date (Print):January 1, 1991Publication History Published o…
The hydrothermal synthetic conversion of aluminium-rich zeolites to organo-zeolites in the presence of N,N,N-trimethyl-1-adamantammonium cations is now extended to the faujasite system. Rates of conversion are seen to be dramatically affected by various treatments of the FAU (faujasite) zeolites. Rates are depressed b…
Two novel, simple control strategies for current-controlled pulse-width modulated (PWM) transistor inverters are presented. Both methods are based on the three-level hysteresis comparators which select appropriate inverter output voltage vectors via a switching electrically programmable read-only memory (EPROM) table.…
Highly stable structures with planar tetracoordinate central atoms, Al4O, Al4N–, Al3SiN, cis-Al2Si2C, trans-Al2Si2C and AlSi3B, are predicted computationally at the ab initio MP4SDTQ/6-311 + G*//MP2(full)/6-31G* level.
A good review of most of the literature in the field of polymers published since 1968 makes this a good starting point for someone just entering the field. The author gives a thorough overview of many aspects of diffusion in polymers. The chapters are somewhat narrow in scope, though they provide useful material such…
BASIC PHYSICS. Review of Atomic Structure and Statistical Mechanics. Crystalline Solids and Energy Bands. FUNDAMENTALS OF SEMICONDUCTORS. Semiconductor Materials and Their Properties. Carrier Transport in Semiconductors. Excess Carriers in Semiconductors. JUNCTIONS AND INTERFACES. p-n Junctions. Static I-V Characteris…
Cellulose is the most abundant biological polymer on Earth. It is found in wood and cotton, and forms the basic structural foundation of the cell wall of almost all eukaryotic plants. Bacteria are known to secrete cellulose as part of their metabolism of glucose and other sugars. The focus of this review is upon bacte…
Different contributions to the dielectric permittivity in ferroelectric liquid crystals are discussed, with emphasis on the soft mode and the Goldstone mode and their location in the dielectric spectrum. Experimentally, the complex dielectric permittivity has been studied as a function of temperature and frequency in…