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Issue 26, 2017
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Avoiding the pull-in instability of a dielectric elastomer film and the potential for increased actuation and energy harvesting

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Abstract

Pull-in instability often occurs when a film of a dielectric elastomer is subjected to an electric field. In this work, we concoct a set of simple, experimentally implementable, conditions that render the dielectric elastomer film impervious to pull-in instability for all practical loading conditions. We show that a uniaxially pre-stretched film has a significantly large actuation stretch in the direction perpendicular to the pre-stretch and find that the maximal specific energy of a dielectric elastomer generator can be increased from 6.3 J gāˆ’1 to 8.3 J gāˆ’1 by avoiding the pull-in instability.

Graphical abstract: Avoiding the pull-in instability of a dielectric elastomer film and the potential for increased actuation and energy harvesting

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Publication details

The article was received on 16 Mar 2017, accepted on 28 May 2017 and first published on 01 Jun 2017


Article type: Communication
DOI: 10.1039/C7SM00542C
Citation: Soft Matter, 2017,13, 4552-4558
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    Avoiding the pull-in instability of a dielectric elastomer film and the potential for increased actuation and energy harvesting

    S. Yang, X. Zhao and P. Sharma, Soft Matter, 2017, 13, 4552
    DOI: 10.1039/C7SM00542C

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