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Issue 2, 2012
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Harnessing snap-through instability in soft dielectrics to achieve giant voltage-triggered deformation

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Abstract

A soft dielectric membrane is prone to snap-through instability. We present theory and experiment to show that the instability can be harnessed to achieve giant voltage-triggered deformation. We mount a membrane on a chamber of a suitable volume, pressurize the membrane into a state near the verge of the instability, and apply a voltage to trigger the snap without causing electrical breakdown. For an acrylic membrane we demonstrate voltage-triggered expansion of area by 1692%, far beyond the largest value reported in the literature. The large expansion can even be retained after the voltage is switched off.

Graphical abstract: Harnessing snap-through instability in soft dielectrics to achieve giant voltage-triggered deformation

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Article information


Submitted
13 Sep 2011
Accepted
07 Oct 2011
First published
28 Oct 2011

Soft Matter, 2012,8, 285-288
Article type
Communication

Harnessing snap-through instability in soft dielectrics to achieve giant voltage-triggered deformation

C. Keplinger, T. Li, R. Baumgartner, Z. Suo and S. Bauer, Soft Matter, 2012, 8, 285
DOI: 10.1039/C1SM06736B

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