Materials Literature
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The method that we have developed [ P-P. Borsboom , Ph.D. dissertation ( Delft University of Technology, Delft, The Netherlands); P-P. Borsboom H. J. Frankena , J. Opt. Soc. Am. A12, 1134– 1141 ( 1995)] is successfully applied to a two-dimensional focusing grating coupler. The field in the focal region has been determ…
A method to determine the field scattered by a two-dimensional rectangular grating of finite length is developed. Both periodic or aperiodic and lossy or lossless structures can be treated. The grating is built up as a finite sequence of two alternating types of waveguide sections connected by means of step discontinu…
Phytoplankton collected bimonthly by net during 1991–2 from the Sontecomapan lagoon (12 km long and 1·5 km wide), in the Gulf of Mexico, included four species and several forms of the diatom genus Skeletonema. The spatial and temporal distribution of Skeletonema subsalsum, S. pseudocostatum and S. costatum in the lago…
Ageing of solid insulating materials and systems, according to IEC and IEEE standards, is the occurrence of irreversible deleterious changes that critically affect performance and shorten useful life. What causes ageing is not an easy question to answer, nor is it a function of an isolated event or applied stress. Yea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtomic-Scale Restructuring in High-Pressure CatalysisJon Wilson and Cor de GrootCite this: J. Phys. Chem. 1995, 99, 20, 7860–7866Publication Date (Print):May 1, 1995Publication History Published online1 May 2002Published inissue 1 May 1995https://pubs.acs.org/doi/10.1021/j10…
We have developed a novel method to synthesize ‘‘clean’’ carbon nanotubes with relatively higher yield using a hydrogen arc discharge. The quality and yield of the tubes depend sensitively on the gas pressure in the arc discharge. We have observed sharp, open-ended nanotubes with clear lattice fringes at the edges and…
Ab initio calculations based on the density-functional pseudopotential approach have been used to study the fully relaxed structure, the electron distribution and the electronic density of states of (001) terraces, steps, corners and reverse corners, and of F-centers at these surface features on MgO. The calculations…
A computationally efficient implementation of rigorous coupled-wave analysis is presented. The eigenvalue problem for a one-dimensional grating in a conical mounting is reduced to two eigenvalue problems in the corresponding nonconical mounting. This reduction yields two n × n matrices to solve for eigenvalues and eig…
The validity of form-factor, modified-form-factor and anomalous-scattering-factor approximations in predictions of elastic photon-atom scattering is assessed with the aid of the state-of-the-art numerical calculation of Rayleigh scattering obtained using the second-order S-matrix theory, in the photon energy range fro…
Abstract A novel patented process and several reactors have been developed for devulcanization of waste rubbers. The technology is based on the use of the high power ultrasonics. The ultrasonic waves of certain levels in the presence of pressure and heat rapidly break up the three-dimensional network in crosslinked ru…
In the study of the high‐temperature behavior of ceramic hydroxyapatite (HAp), it was found in relation to its ionic conduction properties that HAp underwent partial dehydration of its lattice hydroxide ions. Considering that HAp ceramics are sintered above 1200°C without destruction of the apatitic structure, the deh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMicrostructure Analysis of Poly(lactic acid) Obtained by Lithium tert-Butoxide as InitiatorJ. E. KasperczykCite this: Macromolecules 1995, 28, 11, 3937–3939Publication Date (Print):May 1, 1995Publication History Published online1 May 2002Published inissue 1 May 1995https://p…
The cation exchange capacity (CEC) at pH 7 was measured for samples of 347 A horizons and 696 B horizons of New Zealand soils. The mean CEC was 22.1 cmolc/kg for the A horizons and 15.2 cmolc/kg for the B horizons. Multiple regressions were carried out for CEC against organic carbon (C), clay content, and the content…
Four sets of ZnO-based ceramic varistors (reference samples-ZNR; doped with aluminium-AL; doped with silver-AG; doped with aluminium and silver-AA) have been prepared by the conventional mixed oxide route. The current-voltage (I-V) characteristics, determined at current densities up to 1 mA/cm2, yielded nonlinear coef…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Manganese-Containing Polyoxometalate, [WZnMnII2(ZnW9O34)2]12-, as a Remarkably Effective Catalyst for Hydrogen Peroxide Mediated OxidationsRonny Neumann and Mohammad GaraCite this: J. Am. Chem. Soc. 1995, 117, 18, 5066–5074Publication Date (Print):May 1, 1995Publication…
Rutherford backscattering spectrometry, thermogravimetric analysis, and high-resolution transmission electron microscopy were used to investigate the oxidation behavior of ultrafine grain aluminum powder. Fractional change in mass of Al powder samples were obtained as a function of temperature and exposure time for sa…
The effects of surface roughness on metastable pitting susceptibility of type 304 (UNS S30400) stainless steel (SS) in chloride (Cl–) solution and the transition to stable pitting corrosion were investigated. A smoother surface finish reduced the frequency of metastable pitting because the number of metastable pit sit…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFemtosecond Investigation of Electron Trapping in Semiconductor NanoclustersDavid E. Skinner, D. Philip Colombo Jr., Joseph J. Cavaleri, and Robert M. BowmanCite this: J. Phys. Chem. 1995, 99, 20, 7853–7856Publication Date (Print):May 1, 1995Publication History Published onl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Acid-Base Properties of a Protonated Titanate with the Lepidocrocite-like Layer StructureTakayoshi Sasaki, Mamoru Watanabe, Yuichi Michiue, Yu Komatsu, Fujio Izumi, and Satoshi TakenouchiCite this: Chem. Mater. 1995, 7, 5, 1001–1007Publication Date (Print):Ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation, Characterization, and Applications as Heavy Metals Sorbents of Covalently Grafted Thiol Functionalities on the Interlamellar Surface of MontmorilloniteLouis. Mercier and Christian. DetellierCite this: Environ. Sci. Technol. 1995, 29, 5, 1318–1323Publication Date…