Improved electromechanical behavior in castable dielectric elastomer actuators

被引：68

作者：

Akbari, Samin ^{[1
]}

Rosset, Samuel ^{[1
]}

Shea, Herbert R. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Microsyst Space Technol Lab, Neuchatel, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 07期

基金：

瑞士国家科学基金会;

关键词：

STRAIN;

D O I：

10.1063/1.4793420

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Non-viscoelastic castable elastomers are replacing the polyacrylate VHB films in the new generations of dielectric elastomer actuators (DEAs) to achieve fast and reliable actuation. We introduce the optimum prestretch conditions to enhance the electromechanical behavior of the castable DEAs resulting in large actuation strain. For castable actuator in which the thickness is selected independent of the prestretch, uniaxial prestretch mode offers the highest actuation strain in the transverse direction compared to biaxial and pure shear. We experimentally demonstrate that miniaturization hinders the loss of tension and up to 85% linear actuation strain is generated with a 300 x 300 mu m(2) polydimethylsiloxanes-based DEA. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793420]

引用

页数：5

共 19 条

[1] Microfabrication and characterization of an array of dielectric elastomer actuators generating uniaxial strain to stretch individual cells [J].

Akbari, S. ;

Shea, H. R. .

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2012, 22 (04)

[2] An array of 100 μm x 100 μm dielectric elastomer actuators with 80% strain for tissue engineering applications [J].

Akbari, Samin ;

Shea, Herbert R. .

SENSORS AND ACTUATORS A-PHYSICAL, 2012, 186 :236-241

[3] Advances in Dielectric Elastomers for Actuators and Artificial Muscles [J].

Brochu, Paul ;

Pei, Qibing .

MACROMOLECULAR RAPID COMMUNICATIONS, 2010, 31 (01) :10-36

[4] Harnessing electromechanical membrane wrinkling for actuation [J].

Conn, Andrew T. ;

Rossiter, Jonathan .

APPLIED PHYSICS LETTERS, 2012, 101 (17)

[5] A new constitutive relation for rubber [J].

Gent, AN .

RUBBER CHEMISTRY AND TECHNOLOGY, 1996, 69 (01) :59-61

[6] Giant, voltage-actuated deformation of a dielectric elastomer under dead load [J].

Huang, Jiangshui ;

Li, Tiefeng ;

Foo, Choon Chiang ;

Zhu, Jian ;

Clarke, David R. ;

Suo, Zhigang .

APPLIED PHYSICS LETTERS, 2012, 100 (04)

[7] Harnessing snap-through instability in soft dielectrics to achieve giant voltage-triggered deformation [J].

Keplinger, Christoph ;

Li, Tiefeng ;

Baumgartner, Richard ;

Suo, Zhigang ;

Bauer, Siegfried .

SOFT MATTER, 2012, 8 (02) :285-288

[8] Mechanisms of Large Actuation Strain in Dielectric Elastomers [J].

Koh, Soo Jin Adrian ;

Li, Tiefeng ;

Zhou, Jinxiong ;

Zhao, Xuanhe ;

Hong, Wei ;

Zhu, Jian ;

Suo, Zhigang .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2011, 49 (07) :504-515

[9] Complex interplay of nonlinear processes in dielectric elastomers [J].

Kollosche, Matthias ;

Zhu, Jian ;

Suo, Zhigang ;

Kofod, Guggi .

PHYSICAL REVIEW E, 2012, 85 (05)

[10] An arm wrestling robot driven by dielectric elastomer actuators [J].

Kovacs, Gabor ;

Lochmatter, Patrick ;

Wissler, Michael .

SMART MATERIALS AND STRUCTURES, 2007, 16 (02) :S306-S317

← 1 2 →