High electromechanical coupling factor and electrostrictive strain over broad frequency range in electrostrictive poly(vinylidene fluoride-trifluoroethylene) copolymer films

Vivek Bharti, T. B. Xu, Z. Y. Cheng, T. Mai, Q. M. Zhang, Tom Ramotowski, K. A. Wright

    Research output: Contribution to journalArticle

    5 Scopus citations

    Abstract

    Electromechanical coupling factor is one of the most important parameters for measuring the performance of materials for electromechanical transduction applications. In this paper, we will show that a transverse electromechanical coupling factor k31 of more than 0.45 can be achieved in poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer under certain electron irradiation treatment conditions. In addition, the effective piezoelectric coefficients of the irradiated copolymer have been found to increase markedly in comparison to non-irradiated copolymers. Experimental evidences also indicate that the improved electrostrictive strains in irradiated copolymer films can be maintained over a broad frequency and temperature range.

    Original languageEnglish (US)
    Pages (from-to)672-675
    Number of pages4
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume40
    Issue number2 A
    DOIs
    StatePublished - Feb 2001

    All Science Journal Classification (ASJC) codes

    • Engineering(all)
    • Physics and Astronomy(all)

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