Materials Literature
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Molecular orientational structures in MHPOBC were studied by means of conoscope observation. Contrary to a ferroelectric response of the conoscope to an electric field in the smectic C * phase, the conoscopic figure in the antiferroelectric smectic C A * phase does not shift its center and is biaxial with its optic pl…
We have prepared polyacetylene (ν-(CH) x ) yielding a conductivity of more than 10 5 S/cm, by making some modifications on Naarmann et al.'s method. Structural analyses of this polymer were carried out by use of various analysis techniques such as SEM, IR and resonance Raman spectroscopy to characterize ν-(CH) x . No…
P. C. B. Page, S. S. Klair and S. Rosenthal, Chem. Soc. Rev., 1990, 19, 147 DOI: 10.1039/CS9901900147
Abstract A thermodynamic analysis of polymer particle morphology highlights the role of interfacial tensions in controlling particle structure. The influence of the surfactant and the nature of the incompatible polymers is seen through their individual and collective effects upon these interfacial tensions. It has bee…
Resonance Raman spectra with variable-wavelength excitation are reported for nickel octaethylporphyrin and its isotopomers containing <sup>15</sup>N, and <sup>2</sup>H at the methine (meso-d<sub>4</sub>) and methylene (methylene-d<sub>16</sub>) carbon atoms. The <sup>15</sup>N, meso-d<sub>4</sub> double isotopomer is…
Resonance Raman spectra with variable-wavelength excitation are reported for Ni<sup>II</sup> porphine (NiP) and for the pyrrole-d<sub>8</sub>, meso-d<sub>4</sub>, and (pyrrole + meso)-d<sub>12</sub> isotopomers, as well as for Ni<sup>II</sup> meso-tetraphenylporphine (NiTPP) and its pyrrole-<sup>15</sup>N<sub>4</sub>,…
This book contains the proceedings of the Fourth International Conference on the Effect of Hydrogen on the Behavior of Metals. Included are the following papers: The influence of microstructure on hydrogen transport in nickel-base alloys, Hydrogen uptake during cadmium electroplating, Hydrogen, embrittlement in lean u…
In this paper we describe the details of several model Hamiltonian cluster calculations, suitable for describing various spectroscopic data of CuO. By treating the d-d Coulomb and exchange interactions within the full atomic multiplet theory and using symmetry-dependent Cu-O hybridizations, we do a detailed comparison…
Chemically prepared poly(N-alkyldiphenylamine) polymers are conductive and electrochemically reversibly dopable in organic and aqueous solutions; cast polymer films exhibit multiple, reversible colour changes in 1 M LiCLO4 in acetonitrile or 1 M HClO4 aqueous under potential cycling between 0.0 and 1.0 vs. Ag/AgCl or…
Three protein binding sites have been identified in the upstream region of the sericin-1 gene. Two of them, SA and SC sites, have been known as putative cis-acting elements. Using synthetic oligonucleotides of these binding sites, it was found that silk gland factor-1 (SGF-1) binds to the SA site, and silk gland facto…
We have grown ultrathin films of layered transition metal dichalcogenides (MoSe2,NbSe2) heteroepitaxially on cleaved faces of mica (muscovite). This is the first success in the heteroepitaxial growth between highly heterogeneous layered materials having different crystal structures and lattice constants that differ by…
Abstract
Abstract To describe the experimental data of the line strength and the oscillator strength of electric dipole transition between manifolds a formula is suggested that takes into account the dependence on the energy of manifolds and the effect of electron correlation. It contains four phenomenological parameters and i…
A new process using pulse electric discharging for modification of solidification structures was investigated. If an extremely high voltage or high current is applied to solidifying metallic alloys by discharging a capacitor bank, large pressure gradients result, which produce strong local shear, and can be expected t…
It is demonstrated that a grain size dependence exists for the rotational permeability of a series of MnZn polycrystalline ferrites, analogous to that predicted by the Globus model for wall permeability. To account for this behavior, a model has been developed which considers crystalline ferrite grains with intrinsic…
Four topics in the field of electronic ceramics are reviewed: multilayer ceramic capacitors, piezoelectric ceramics, electrooptic ceramics, and ferroelectric thin films. They all are related to ferroelectric ceramic materials. The scope of this review is limited to oxide compounds, because oxide ferroelectrics, for th…
This compendium includes a collection of the neutron spectra encountered in various occupational environments and the spectra of calibration neutron sources. It furthermore comprises the response functions of various neutron dosemeters and survey instruments. Finally, it includes the calculated energy responses for ea…
A general review of some of the theories proposed to account for the process of “bronze disease” is presented from both the historical and chemical points of view. The corrosion product of most serious concern, cuprous chloride, and its inter-relationship with some of the other important corrosion products of copper a…
When a bubble in a liquid is subjected to a periodic sound field, the resulting bubble oscillations can interact with the sound field, giving rise to the primary Bjerknes force. A simple undergraduate-level derivation, and a graphical illustration of the underlying processes, are given.
Conventional techniques and new techniques based on digitizing instruments for making high-frequency B-versus-H loop and core-loss measurements on magnetic cores are presented and compared. Potential sources of measurement errors and their magnitudes, limitations imposed by the instrumentation, and thermal considerati…