Materials Literature
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We present Monte Carlo simulations of the extinction rate of dense media with randomly distributed dielectric spheres that occupy up to 25% by volume and size parameter ka = 0.2. Maxwell’s equations in multiple-scattering form are solved iteratively for each realization. Convergence is demonstrated numerically by vary…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdering of copolymer thin films as revealed by atomic force microscopyB. Collin, D. Chatenay, G. Coulon, D. Ausserre, and Y. GallotCite this: Macromolecules 1992, 25, 5, 1621–1622Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT"Hardness profile" of a reaction pathDipankar DattaCite this: J. Phys. Chem. 1992, 96, 6, 2409–2410Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/j100185a005https://doi.org/10…
Model surface studies of magnesium oxide have been carried out using surface sensitive techniques. Ultrathin MgO films have been synthesized under ultrahigh vacuum (UHV) conditions by thermally evaporating Mg onto Mo(100) in the presence of oxygen. Low-energy electron diffraction (LEED) studies indicate that the MgO f…
The various applications of high‐performance polymers , for example in hollow‐fiber membranes (see figure) or as gears in chemical pumps, require materials with widely differing properties. An overview of the different classes of high‐performance polymers available, including polyetherketones, polysulfones, and polyam…
The luminescence properties of 3 μm thick, strongly emitting, and highly porous silicon films were studied using a combination of photoluminescence, transmission electron microscopy, and Fourier transform infrared spectroscopy. Transmission electron micrographs indicate that these samples have structures of predominan…
A boundary element method (BEM) in terms of magnetic vector potential and electric scalar potential is successfully applied to three-dimensional, multiply connected, and open boundary problems caused by the heavy current of leads in a three-phase combination transformer. The quasi-frontal method is employed for the so…
X-ray photoelectron spectroscopy measurements of the principal core levels of high purity strontium carbonate are presented.
The effect of liquid animal manure on heavy metal solubilization in soil has been studied in the laboratory; three different types of experiments were carried out: 1) aerobic and anaerobic incubation of soil/manure mixtures 2) desorption of heavy metals from soil, as affected by manure liquid fraction 3) gel permeatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew layered ternary niobium tellurides: synthesis, structure, and properties of niobium metal telluride, NbMTe2 (M = iron, cobalt)Jing Li, Michael E. Badding, and F. J. DiSalvoCite this: Inorg. Chem. 1992, 31, 6, 1050–1054Publication Date (Print):March 1, 1992Publication His…
Escherichia coli kgtP which maps at 56.5 min codes for alpha-ketoglutarate permease (KgtP). This protein, expressed from the cloned gene using the T7 polymerase system and [35S]methionine labeling, fractionated with cell membranes. Right-side-out (RSO) membrane vesicles prepared from a kgtP negative mutant strain did…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultilayer films of chromophoric cellulose octadecanoates studied by fluorescence spectroscopyYoshinobu Tsujii, Takahiro Itoh, Takeshi Fukuda, Takeaki Miyamoto, Shinzaburo Ito, and Masahide YamamotoCite this: Langmuir 1992, 8, 3, 936–941Publication Date (Print):March 1, 1992…
The authors present a calculation method for electric fields and potential applicable in the case of a polluted insulator. This method, based on boundary integral equations, is suitable for 3-D geometries and polluted layers. Results obtained by this method are compared with analytical solutions (potential, currents)…
Generally speaking, nucleation and crystallization can be described as the thermal and kinetic processes which allows the formation from a structurally disordered phase, of a stable solid phase with a regular ordered geometry. These ordering processes take place as a consequence of the decreasing free energy of the sy…
The authors describe the results obtained from a rarely published method of calculating eddy losses in thick conducting materials. The surface impedance formulation is used in a finite element software package which is applied in turn to the design of large power transformers. The transformer and model details are dis…
The PbSc0,5Ta0,5O3 solutions are found to be a useful material for active elements of microcryogenic devices based on electrocaloric effect. A temperature difference of ΔT = 1. 0-1.8 K at field intensities 20–30 kV/cm in the interval of 210–310 K can be achieved by simultaneous or separate introducing of Sb and Co ion…
X-ray photoelectron spectroscopy measurements of the principal core levels, including the energy loss regions, for a SrTiO3(100) single crystal are presented.
Several methods for isolation of the paracrystalline surface (S) layer protein (RsaA) of Caulobacter crescentus CB15A were evaluated. Treatment of cells with HEPES (N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid) buffer at pH 2 was the most effective means of selectively removing RsaA from cells, and after neutra…
A through‐space interaction and not superexchange of the bridging ligands explains the antiferromagnetic coupling in dinuclear face‐sharing octahedral complexes with d 3 ‐d 3 electronic configuration. The metal‐metal distance is the only relevant structural parameter for the spin‐exchange coupling constants of a serie…
An experimental electret generator has been developed to examine its operating theory. Although the generator is essentially a simplified version of Jefimenko's electret generator, it has none of the shortcomings of his generator. Since the electret used in our generator is a Teflon FEP film electret retaining stable…