Space-charge-enhanced electromechanical response in thin-film Polyurethane elastomers

J. Su; Q. M. Zhang; R. Y. Ting

doi:10.1063/1.119545

Space-charge-enhanced electromechanical response in thin-film Polyurethane elastomers

J. Su, Q. M. Zhang, R. Y. Ting

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

95 Scopus citations

Abstract

We show that the large electrical-field-induced strain response observed in certain polyurethane elastomers is a thin-film effect. Based on the frequency dispersion of the strain response in samples with different thicknesses and the thermally stimulated discharge current on samples with different processing conditions, we suggest that the charge injection, an interface effect, which results in a nonuniform space-charge distribution and, hence, a nonuniform electric-field distribution across the sample thickness, is responsible for the enhanced electromechanical response in thin polyurethane samples.

Original language	English (US)
Pages (from-to)	386-388
Number of pages	3
Journal	Applied Physics Letters
Volume	71
Issue number	3
DOIs	https://doi.org/10.1063/1.119545
State	Published - Jul 21 1997

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.119545

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abstract = "We show that the large electrical-field-induced strain response observed in certain polyurethane elastomers is a thin-film effect. Based on the frequency dispersion of the strain response in samples with different thicknesses and the thermally stimulated discharge current on samples with different processing conditions, we suggest that the charge injection, an interface effect, which results in a nonuniform space-charge distribution and, hence, a nonuniform electric-field distribution across the sample thickness, is responsible for the enhanced electromechanical response in thin polyurethane samples.",

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N2 - We show that the large electrical-field-induced strain response observed in certain polyurethane elastomers is a thin-film effect. Based on the frequency dispersion of the strain response in samples with different thicknesses and the thermally stimulated discharge current on samples with different processing conditions, we suggest that the charge injection, an interface effect, which results in a nonuniform space-charge distribution and, hence, a nonuniform electric-field distribution across the sample thickness, is responsible for the enhanced electromechanical response in thin polyurethane samples.

AB - We show that the large electrical-field-induced strain response observed in certain polyurethane elastomers is a thin-film effect. Based on the frequency dispersion of the strain response in samples with different thicknesses and the thermally stimulated discharge current on samples with different processing conditions, we suggest that the charge injection, an interface effect, which results in a nonuniform space-charge distribution and, hence, a nonuniform electric-field distribution across the sample thickness, is responsible for the enhanced electromechanical response in thin polyurethane samples.

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Space-charge-enhanced electromechanical response in thin-film Polyurethane elastomers

Abstract

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