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Nickel spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer (XPS) using monochromatic Al Kα at five pass energy settings corresponding to analyzer resolutions of 1.34, 0.54, 0.27, 0.13, and 0.067 eV. The specimen is a high purity 4 μm thick nickel foil (99.95%) obtained from…
We have carried out first-principles pseudopotential calculations to study the formation energies of various ZnSe(100) surface reconstructions. Both Zn- and Se-terminated models are treated, using as a guide the satisfaction of the electron counting rule (i.e., charge compensation at the surface by the filling of all…
We report x-ray photoemission spectra (XPS) of lithium nickel oxide (LiNiO2). XPS spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer using unmonochromatized Mg Kα x rays at two pass energy settings corresponding to analyzer energy resolutions of 1.34 and 0.54 eV. We present…
We report x-ray photoemission spectra (XPS) of electrochemically prepared γ-NiOOH. XPS spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer using unmonochromatized Mg Kα x rays at two pass energy settings corresponding to analyzer energy resolutions of 1.34 and 0.54 eV. We pr…
A model is examined for thermoelastic materials, such as those that display the shape memory and pseudoelastic effect. As is common with models for these materials, an internal variable is utilized which gives the phase fraction of austenite at the microstructural level within the continua. Evolution equations are dev…
We report x-ray photoemission spectra (XPS) of beta-nickel hydroxide (β-Ni(OH)2). XPS spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer using unmonochromated Mg Kα x rays at two pass energy settings corresponding to analyzer energy resolutions of 1.34 and 0.54 eV. We prese…
The gene of subtilisin S41, an alkaline protease secreted by the psychrophile Bacillus TA41, encodes for a preproenzyme of 419 amino acids residues. The nucleotide sequence and NH2- and COOH-terminal amino acid sequencing of the purified enzyme indicate that the mature subtilisin S41 is composed of 309 residues with a…
Polymers have wide-ranging applications in food packaging and decorative products, and as insulation for electronic devices. For these applications, the adhesion of materials deposited onto polymer substrates is of primary importance. Not all polymer surfaces possess the required physical and/or chemical properties fo…
It has been known for many years that the grounding resistance of a concentrated electrode drops when it is subjected to a high current charge. This helps reduce the ground potential rise. The degree of the resistance depends on the magnitude of the ionization gradient of the soil E/sub o/. Based on both a theoretical…
Background and procedure for the sol-gel preparation of silica from molecular precursors.
A systematic theory for the dynamics of concentrated hard-sphere suspensions of interacting Brownian particles with both hydrodynamic and direct interactions is presented. An alternative equation for the number density of particles is derived. The volume-fraction dependence of the short- and long-time self-diffusion c…
Abstract A CFF93 1 all‐atom force field for aromatic polyesters based on ab initio calculations is reported. The force field parameters are derived by fitting to quantum mechanical data which include total energies, first and second derivatives of the total energies, and electrostatic potentials. The valence parameter…
Possible mechanisms for strain relaxation in ferroelectric thin films are developed. The models are applicable to tetragonal thin film ferroelectrics grown epitaxially on (001) cubic single crystal substrates. We assume growth at temperatures in excess of the Curie temperature (Tc). The extent of strain accommodation…
Abstract Supercritical carbon dioxide is known to swell and plasticize poly(methyl methacrylate), PMMA, dramatically. We have employed a pressure quench in a CO 2 ‐swollen PMMA sample to generate a microcellular core structure encased by a nonporous skin. Further, we have demonstrated that classical nucleation theory…
Size effects on the Curie temperature and spontaneous polarization in spherical particles are studied using Landau phenomenological theory. The extrapolation length is shown to be size dependent. The spatial distribution of polarization is obtained. The size dependence of the polarization is calculated whereby a size-…
We report x-ray photoemission spectra (XPS) of nickelous oxide (NiO). XPS spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer using unmonochromatized Mg Kα x rays at two pass energy settings corresponding to analyzer energy resolutions of 1.34 and 0.54 eV. We present the sur…
A dilute solution parameter obtained from static light-scattering measurements is proposed as a predictor for protein crystallization experiments. The osmotic second virial coefficients, B(22), have been measured for a variety of proteins in solvents that are known to promote crystallization and the values for B(22) w…
The Brillouin light scattering technique was used to determine the complex mechanical modulus, which describes the dynamic response of molecular structures, for ${\mathrm{B}}_{2}$${\mathrm{O}}_{3}$ and binary alkali borate. The effects of temperature, alkali concentration, oxygen and water vapor partial pressures on t…
The temperature coefficient of the dielectric permittivity (τ ε ) of nonferroelectric complex perovskites is of importance in the application of these cermaics to microwave filters and resonators. Recent work has directly related changes in the τ ε of complex perovskites to the onset of structural phase transitions wh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Gyroid: A New Equilibrium Morphology in Weakly Segregated Diblock CopolymersDamian A. Hajduk, Paul E. Harper, Sol M. Gruner, Christian C. Honeker, Gia Kim, Edwin L. Thomas, and Lewis J. FettersCite this: Macromolecules 1994, 27, 15, 4063–4075Publication Date (Print):July…