CHEMICAL DOPING OF POLYACETYLENE BY TRANSITION METAL HALIDES
Doping effect of various transition metal halides on polyacetylene were studied in the solution doping as a function of doping time and solvent.
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Lower tail analysis of the distribution of the strength of load-sharing systems
The Weibull distribution for the strength of a long fiber is reviewed, with emphasis on its derivation via extreme-value theory. It is shown that a corresponding Weibull distribution, but with different scale and shape parameters, is appropriate for the lower tail distribution of a bundle of parallel fibers under gene…
Lower tail analysis of the distribution of the strength of load-sharing systems
The Weibull distribution for the strength of a long fiber is reviewed, with emphasis on its derivation via extreme-value theory. It is shown that a corresponding Weibull distribution, but with different scale and shape parameters, is appropriate for the lower tail distribution of a bundle of parallel fibers under gene…
Structure-property relationships of polyacetylene/polybutadiene blends
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure-property relationships of polyacetylene/polybutadiene blendsMichael F. Rubner, Sukant K. Tripathy, J. Georger Jr., and P. CholewaCite this: Macromolecules 1983, 16, 6, 870–875Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Publish…
CRITERIA FOR SELECTING ELECTRODES FOR ELECTRICAL STIMULATION: THEORETICAL AND PRACTICAL CONSIDERATIONS
Smaller, more charge-intensive electrodes are needed for "safe" stimulation of the nervous system. In this paper we review critical concepts and the state of the art in electrodes. Control of charge density and charge balance are essential to avoid tissue electrolysis. Chemical criteria for "safe" stimulation are revi…
Magnetic ordering and exchange effects in the antiferromagnetic solid solutionsMnxNi1−xO
The antiferromagnetic phases of MnO, NiO, and the solid solutions ${\mathrm{Mn}}_{x}{\mathrm{Ni}}_{1\ensuremath{-}x}\mathrm{O}$ ($x=0.24, 0.48, 0.77$) have been examined by high-resolution powder neutron diffraction. The solid solutions have random cation distributions, and N\'eel temperature and mean cation-moment me…
Constitutive Equations for Damaging Materials
The paper focuses on the derivation of the constitutive law for a material containing flat, planar microcracks. The damage law is derived from the dissipation potential in conjunction with the orthogonality principle. The dissipation potential is shown to exist in the space of conjugate thermodynamic forces related to…
Electrical Properties of Black Phosphorus Single Crystals
Large single crystals of black phosphorus have been grown under high pressure, and by using the crystals, the Hall measurements have been done in a range from 4.2 K to 550 K. All the undoped samples have exhibited p -type conduction, while we have succeeded in obtaining n -type crystals by doping Te impurity. The effe…
Electrical properties of polyacetylene/polysiloxane interface
Polyacetylene/polysiloxane interface states have been investigated using metal-insulator-semiconductor (MIS) diodes. The 1-mm2 MIS diodes (Al/polysiloxane/polyacetylene) have been fabricated by use of a conventional photolithographic technique. The I-V and C-V measurements were used to explore the polyacetylene/polysi…
Effect of dopant on the physicochemical and electrical properties of organic conducting polymers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of dopant on the physicochemical and electrical properties of organic conducting polymersG. Tourillon and F. GarnierCite this: J. Phys. Chem. 1983, 87, 13, 2289–2292Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Published inissue 1…
Properties of tin doped indium oxide thin films prepared by magnetron sputtering
Indium tin oxide (ITO) films have been prepared by the magnetron sputtering technique from a target of a mixture of In2O3 and SnO2 in the proportion 9:1 by weight. By optimizing the deposition conditions it has been possible to produce highly transparent (transmission ∼90%) and conducting (resistivity ∼10−5 Ω cm) ITO…
Polarization and depolarization behavior of hot pressed lead lanthanum zirconate titanate ceramics
A detailed study of the polarization and depolarization behavior of 7:65:35 and 8:65:35 lead lathanum zirconate titanate transparent ceramics under dc bias and constant heating rates has been carried out. The dielectric permittivity exhibits a new anomaly near 0 °C in freshly thermally depoled samples which is associa…
Highly deacetylated chitosan and its properties
Abstract A preparative method has been established for obtaining chitosan products which have a desired degree of deacetylation of up to virtually 100%. Effective deacetylation was attained by intermitently washing the intermediate product in water two or more times during the alkali treatment. The weight average mole…
Optical transitions ofEr3+ions in fluorozirconate glass
Optical-absorption, -emission, and -excitation spectra are presented for ${\mathrm{Er}}^{3+}$ ions in fluorozirconate glass. Measured oscillator strengths of the transitions between $J$ manifolds at 300 and 15 K are compared with calculated electric and magnetic dipole oscillator strengths. Radiative rates for five lu…
Permanent cell line expressing human factor VIII-related antigen established by hybridization.
A permanent human cell line, EA . hy 926, has been established that expresses at least one highly differentiated function of vascular endothelium, factor VIII-related antigen. This line was derived by fusing human umbilical vein endothelial cells with the permanent human cell line A549. Hybrid cells that survived in s…
ChemInform Abstract: A NEW APPROACH TO CONSTRUCTION OF ARTIFICIAL MONOLAYER ASSEMBLIES
Abstract Am aufgezeichneten Beispiel wird unter Verwendung eines bifunktionellen Si1an‐Grenzflächenaktiven Stoffes durch sukzessive Chemisorption und chemische Aktivierung der Aufbau mehrschichtiger Filme wie (III) und (V) aus einschichtigen demonstriert.
Thermal conductivity, heat capacity and phase stability of solid sodium chlorate (NaClO3) under pressure
The thermal conductivity, lambda , and the specific heat capacity at constant pressure, c p , have been measured for solid sodium chlorate (NaClO 3 ) in the temperature range 100-300K. Differential scanning calorimetry (DSC) was used to measure c p at atmospheric pressure, whilst the transient hot-wire method was used…
Experimental Observation of Continuous Melting into a Hexatic Phase
This paper reports the results of an x-ray diffuse scattering study of the melting transition of monolayer xenon on the surface of single crystals of exfoliated graphite. It is found that the two-dimensional xenon solid melts into an orientationally ordered liquid (or hexatic) phase. The temperature dependence of the…
Dielectric properties of modified PZT ceramics
The dependence of the dielectric constant on the electric field of PZT ceramics can be well explained by the mechanism of domain wall motion. The mobility of the domain wall is increased by the A-site vacancies, due to the reduction of local stress in the domains which undergo domain switching. But O-site vacancies an…
The DC resistivity of modified PZT ceramics
PZT ceramics with various impurities were prepared by the powder metallurgy method, in the temperature range 1150-1350 degrees C. The electrical resistivity of each composition has been studied. Explanations based on the distribution model were given. Within the solubility limit, the impurities can produce A-site vaca…