Materials Literature
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Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Myosin is identified and purified from three different established Drosophila melanogaster cell lines (Schneider's lines 2 and 3 and Kc). Purification entails lysis in a low salt, sucrose buffer that contains ATP, chromatography on DEAE-cellulose, precipitation with actin in the absence of ATP, gel filtration in a dis…
The scattering matrix, differential cross section, and the total cross section for a small nematic droplet are derived in the Rayleigh-Gans approximation. Different nematic director configurations are considered for the droplet. Those studied are the configurations which result in a spherical droplet from different mo…
Surface flashover in compressed-gas insulated systems is a much studied, but poorly explained phenomenon. In this paper we review the literature of surface flashover with primary emphasis on the understanding of physical processes leading to discharge initiation and insulator flashover under high voltage excitation. T…
The effects of X-ray atomic asphericity on derived molecular geometry have been examined for ten common substructures involving C, N, O. The Cambridge Structural Database has been used to locate pairs of X-ray (X) and neutron (N) structure determinations of the same compound. Rigid criteria based on experimental tempe…
X‐ray diffraction data are presented in support of the existence of ferroelasticity in tetragonal zirconia. Reorientation of ferroelastic domains by externally applied stress is proposed as a toughening mechanism. Toughening by this mechanism can occur in addition to transformation toughening and also explains high to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTColloid stabilization by long grafted polymersT. A. Witten and P. A. PincusCite this: Macromolecules 1986, 19, 10, 2509–2513Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published inissue 1 October 1986https://pubs.acs.org/doi/10.1021/…
The increasing application of SF6 as an insulating gas has led to many studies on SF6 decomposition in gas-insulated equipment. In the presence-of an electric arc, spark or corona, SF6 decomposes to a wide variety of chemically active products which possess completely different properties from SF6. The accumulation of…
Abstract Several clay-organic complexes were synthesized by placing quaternary ammonium cations on smectite by cation exchange. They were then examined for their ability to adsorb phenol and several of its chlorinated congeners. The organic cations used were: hexadecylpyridinium (HDPY + ), hexadecyltri-methyl ammonium…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium morphology of block copolymer meltsTakao Ohta and Kyozi KawasakiCite this: Macromolecules 1986, 19, 10, 2621–2632Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published inissue 1 October 1986https://pubs.acs.org/doi/10.1021…
Low voltage scanning electron microscopy is an important part of microelectronic inspection technique. This makes it possible to examine devices without changing the electrical properties, and to examine nonconducting samples such as photoresist without the use of a surface metal layer. The secondary electron imaging…
A class of electrostatic lenses with extremely low spherical aberration is proposed. The axial potential distribution of these lenses has an asymmetric bell-shaped form with a lower potential on the image side. A lens with Cso∞/fo=0.51 is presented as an example. The maximum required electrode voltage is only five tim…
A twisted nematic liquid crystal cell with two transparent conductive substrates each of which has two metal terminals was studied. It was found that a circular or elliptical light-transmitting area (bright area) was formed in the, cell window by applying four kinds of voltage signals to each terminal. The light-trans…
A monomeric mutant lactose repressor protein (T-41), containing serine at position 282 in place of tyrosine [Schmitz, A., Schmeissner, U., Miller, J. H., & Lu, P. (1976) J. Biol. Chem. 251, 3359-3366], has been purified by a series of chromatographic and precipitation methods. The molecular weight of the mutant as det…
The urea-induced equilibrium unfolding transition of dihydrofolate reductase from Escherichia coli was monitored by UV difference, circular dichroism (CD), and fluorescence spectroscopy. Each of these data sets were well described by a two-state unfolding model involving only native and unfolded forms. The free energy…
Micromolar solutions of tryptophan synthase beta 2 dimer dissociate into monomers in the pressure range of 800-1600 bars as shown by studies of the spectral shift of the intrinsic fluorescence and of the fluorescence polarization of dansyl conjugates. At 25 degrees C the standard change in volume on dissociation (dV0)…
We report new x-ray scattering data on AlMn alloys. None of our samples are perfect quasicrystals; all have finite-width x-ray peaks. Specific preparation techniques lead to samples with peak widths which correlate strongly with ${G}_{\ensuremath{\perp}}$ (phason momentum). We show that the data are consistent with ei…
We describe a process for the formation of silicon-on-insulator structures by selective anodization of a buried p-type layer to form porous silicon which is then oxidized. A buried n-type layer ensures that the flow of the anodizing current, and hence the formation of the porous silicon layer, is directed laterally ra…
We present Monte Carlo simulations on systems of parallel spherocylinders with length-to-width ratios $\frac{L}{D}$ between 0.25 and 5. We have determined the solid-liquid coexistence points in these systems by computing the absolute free energy of the solid and fluid phases. In addition we find that for $\frac{L}{D}&…
In this paper, we discuss how quenched strains in phonon and phason variables and/or quenched dislocations can lead to peak broadening and distortion in quasicrystal diffraction patterns. We argue that high-resolution electron micrographs and observations of distortions in electron diffraction patterns indicate the pr…