Materials Literature
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The self-assembled monolayers (SAMs) of 6-mercaptopurine (6MP) were formed at the roughened polycrystalline gold surfaces in acid and alkaline media. The time-dependent Raman mapping spectral analysis in conjunction with the quantum calculations for the vibrational modes using ab initio BLYP/6-31G method suggested tha…
Abstract Half-substituted dendritic phenylazomethine dendrimers with various substituents (Half-DPA-X Gn, where n is the generation number) were synthesized in order to elucidate the electron gradients in the dendrons by complexation with metal ions. Along with the change in the UV–vis spectra, the isosbestic point sh…
A detailed study on the removal of oxides of nitrogen (NOx) with and without the presence of carbonaceous soot in a stationary diesel engine exhaust was carried out using pulsed electrical discharges/catalyst/adsorbent processes. The processes were separately studied first and then the cascaded processes namely plasma…
Metabolically engineered Escherichia coli JM109 harboring plasmid pBPP1 and expressing the nonnatural BPEC pathway for synthesis of thermoplastic polyhydroxyalkanoates (PHA) and novel polythioesters (PTE) to provide suitable substrates of PHA synthase was investigated with respect to biotechnological production of pol…
Abstract A new project‐oriented database concept for high‐throughput materials research and development is presented. The relational database is built on the common software MS‐Access. Its advantages are high versatility and compatibility as well as simple data import and export. Due to its modular conception, it is e…
We have studied ways of stabilizing the bend configuration in π-cells by forming polymer walls. This novel device with polymer walls, which makes an initial splay-bend transition unnecessary, incorporates minute structures fabricated by applying the processes of local photopolymerization-induced phase separation and e…
Albemarle Corp is to acquire Rhodia SA’s global organo-phosphorus and ammonium polyphosphate flame retardants business for applications in rigid and flexible polyurethane foams. Annual global revenue for these products is approximately US$65 million. The transaction is subject to regulatory approvals.This is a short n…
The Trichel pulse (TP) corona generated in the negative corona discharge has a regular interval and repetition of similar waveforms in nonuniform electric field in a needle-plane gap. An electron avalanche causes the TP. Its repetition is determined by accumulation of negative ions near a needle tip. The electric fiel…
A parametric analysis of the performance properties of a group of twenty-four well balanced carpet samples, half of which represent nylon 6 and the other half nylon 66 face yarns, shows that nylon 66 carpets offer superior performance in terms of texture retention and color fastness to ozone. There are no significant…
A new diatom genus typified by the new species Lacunicula sardiniensis Lange-Bertalot, Cavacini, Tagliaventi et Alfinito was recently described by Lange-Bertalot and collaborators from ephemeral pools in Sardinia, Italy. The new genus is mainly characterized by the presence of an external channel system found in the a…
We have studied the mutual action of the optical activity and the electro-optic effect and its influence on the electro-optic Q switch. The birefringence (g33/n_o)(Delta/n_o)^2 resulting from the mutual action is calculated. In the polarization-light interferometric experiment setup, the outgoing light intensity expre…
Abstract The second‐order susceptibility tensor χ (2) (2ω;ω, ω) of a carbon nanotube (CNT) surface was determined as a function both of the average tube orientation and CNT topology distribution. The transformation properties of the hyperpolarizability β tensor, as rooted in the CNT isogonal symmetry point group, make…
A new compound containing polyoxovanadoborate anion was synthesized and characterized by single-crystal X-ray diffraction analysis. A water molecule at the center of the anion was precisely determined. The crystals of the new compound belong to the monoclinic system, space group P21/n with a=1.35002(7), b=2.0864(1), c…
Interactions of cationic FeTMPyP with ionic and nonionic micelles have been studied by optical absorption, resonance light scattering (RLS) and 1 H NMR spectroscopies. The equilibrium behavior of FeTMPyP as a function of pH is described by several species in aqueous solution. The presence of phosphate anions leads to…
An electroactive polynuclear inorganic compound of rare earth metal hexacyanoferrate, lanthanum hexacyanoferrate (LaHCF), was prepared by electrochemical deposition on the surface of a glassy carbon electrode with a potential cycling procedure. The cyclic voltammogram of LaHCF exhibits a pair of well-defined redox pea…
Photoconductivity measurements of amorphous selenium (a-Se) and arsenic selenide (a-As 2 Se 3 ) were carried out. Samples where annealed from 333–358 K at 5 K step for 5 minutes and the photoconductivity was measured after each annealing step. It was found that the dark current increases permanently for a-Se and the p…
The effects of ionic size in octahedral and two kinds of tetrahedral sites (M, T1, and T2) on the thermal expansion of cordierite were systematically investigated by means of molecular dynamics simulations. Thermal expansion along the a axis could be controlled by varying the ionic size in the M‐site, and expansion al…
Low coherence optical interferometry (D. Huang et al., Science 254, 1178 (1991) [1]) has been proven to be an effective tool for characterisation of thin and ultra-thin semiconductor Si wafers (W. J. Walecki et al., 3rd International Workshop on Thin Semiconductor Devices – Manufacturing and Applications, Munich, Germ…
Abstract Naldrettite, Pd 2 Sb, is a new intermetallic mineral discovered in the Mesamax Northwest deposit, Cape Smith fold belt, Ungava region, northern Québec. It is associated with monoclinic pyrrhotite, pentlandite, chalcopyrite, galena, sphalerite, cobaltite, clinochlore, magnetite, sudburyite (PdSb), electrum and…
Consistent hydrodynamical models for electron transport in semiconductors. free of any fitting parameter, have been formulated on the basis of the maximum entropy principle in Continuum Mech. Thermodyn., 11 (1999) 307, 12(2000) 31 for silicon and in Continuum Mech. Thermodyn., 14 (2002) 405 for GaAs. In this paper we…