Journal
SOFT MATTER
Volume 8, Issue 2, Pages 285-288Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sm06736b
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Funding
- FWF [P20971000N20]
- ARO [W911NF-09-1-0476]
- DARPA [W911NF-10-1-0113]
- MRSEC
- Austrian Science Fund (FWF) [P 20971] Funding Source: researchfish
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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.
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