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

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

    Research output: Contribution to journalArticlepeer-review

    93 Scopus citations


    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 languageEnglish (US)
    Pages (from-to)386-388
    Number of pages3
    JournalApplied Physics Letters
    Issue number3
    StatePublished - Jul 21 1997

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)


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