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

被引：392

作者：

Keplinger, Christoph ^{[1
,2
]}

Li, Tiefeng ^{[1
,3
]}

Baumgartner, Richard ^{[2
]}

Suo, Zhigang ^{[1
]}

Bauer, Siegfried ^{[2
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Johannes Kepler Univ Linz, A-4040 Linz, Austria

[3] Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Zhejiang, Peoples R China

来源：

SOFT MATTER | 2012年 / 8卷 / 02期

关键词：

ELASTOMER ACTUATORS; MEMBRANES;

D O I：

10.1039/c1sm06736b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：285 / 288

页数：4

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