Optical investigation of low-temperature electric-field-induced relaxations in amorphous solids

Article Abstract:

A study was conducted to analyze the electrical characteristics of a two-level system in two-polymer glasses. Two types of polymers were examined, namely polymethylmethacrylate and polystyrene. The time evolution of a spectral hole was also analized in an electric field cycling experiment. Results indicated that the time evolution of the field-induced spectral diffusion correlated qualitatively with model predictions.

Polymers, Electric fields, Amorphous semiconductors

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Revised Ehrenfest relations for the glass transition

Article Abstract:

Ehrenfest relations for a second-order phase transition have included glass transitions with low temperature that is out of equilibrium. Glass transition pressure over a wide range of temperature has been predicted by the revised relations.

New Zealand, Analysis, Temperature, Glass research

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Correlation between dispersivity of charge transport and holographic response time in an organic photorefractive glass

Article Abstract:

A new organic photorefractive material is presented which shows excellent photoconductive and nonlinear optical properties. The choice of a suitable plasticizer is shown to be important for dispersing charge transport.

Photorefractive materials

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