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The formation of micro shear bands in polystyrene and polymethylmethacrylate

P. B. Bowden、Sumanta Raha1970-09-01Philosophical magazine

The conditions under which amorphous polystyrene and polymethylmethacrylate deform inhomogeneously by the formation of fine shear bands have been investigated. The thermal history of the sample and the temperature and strain rate at which the deformation is carried out have been found to be critical. Stress-strain dat…

Polymer Nanocomposites and PropertiesPolymer crystallization and propertiesRheology and Fluid Dynamics Studies

Infrared Studies of Segmented Polyurethan Elastomers. I. Hydrogen Bonding

R. W. Seymour、G. M. Estes、S. L. Cooper1970-09-01OpenAlex

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared Studies of Segmented Polyurethan Elastomers. I. Hydrogen BondingR. W. Seymour, G. M. Estes, and S. L. CooperCite this: Macromolecules 1970, 3, 5, 579–583Publication Date (Print):September 1, 1970Publication History Published online1 May 2002Published inissue 1 Septe…

Material Properties and ApplicationsPhotopolymerization techniques and applications

Electrical phenomena in amorphous oxide films

G. Dearnaley、A.M. Stoneham、D. V. Morgan1970-09-01OpenAlex

Thin layers of insulators, from 100 Å to 20 000 Å thick, have a number of interesting electrical properties. These properties include forming, which is a profound and essentially permanent change produced by an electrical field, and, after forming, differential negative resistance together with switching and memory ph…

Phase-change materials and chalcogenidesThin-Film Transistor TechnologiesSemiconductor materials and devices

Relativistic Calculation of Anomalous Scattering Factors for X Rays

D. T. Cromer、David A. Liberman1970-09-01OpenAlex

Anomalous scattering factors Δf′ and Δf″ have been calculated relativistically for Cr, Fe, Cu, Mo, and Ag Kα radiations for the atoms Li through Cf. An interpolation scheme for other wavelengths is included in a separate report. Relativistic calculations of the photoelectric cross section have been made and the integr…

X-ray Spectroscopy and Fluorescence AnalysisLuminescence Properties of Advanced MaterialsRadiation Shielding Materials Analysis

Bragg Reflection of Light from Single-Domain Cholesteric Liquid-Crystal Films

Dwight W. Berreman、T. J. Scheffer1970-08-31Physical Review Letters

Reflection measurements have been made for the first time on single-domain cholesteric liquid-crystal films. We observed spectral structure and polarization character with obliquely incident light never seen with the previously studied disordered films. We also obtained numerical solutions to Maxwell's equations for o…

Nonlinear Dynamics and Pattern FormationLiquid Crystal Research AdvancementsFluid Dynamics and Thin Films