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Proceedings Paper

New electrode materials for dielectric elastomer actuators
Author(s): Wei Yuan; Tuling Lam; James Biggs; Liangbing Hu; Zhibin Yu; Soonmok Ha; Dongjuan Xi; Matthew K. Senesky; George Grüner; Qibing Pei
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Paper Abstract

Dielectric elastomer actuators exert strain due to an applied electric field. With advantageous properties such as high efficiency and their light weight, these actuators are attractive for a variety of applications ranging from biomimetic robots, medical prosthetics to conventional pumps and valves. The performance and reliability however, are limited by dielectric breakdown which occurs primarily from localized defects inherently present in the polymer film during actuation. These defects lead to electric arcing, causing a short circuit that shuts down the entire actuator and can lead to actuator failure at fields significantly lower than the intrinsic strength of the material. This limitation is particularly a problem in actuators using large-area films. Our recent studies have shown that the gap between the strength of the intrinsic material and the strength of large-area actuators can be reduced by electrically isolating defects in the dielectric film. As a result, the performance and reliability of dielectric elastomers actuators can be substantially improved.

Paper Details

Date Published: 11 April 2007
PDF: 12 pages
Proc. SPIE 6524, Electroactive Polymer Actuators and Devices (EAPAD) 2007, 65240N (11 April 2007); doi: 10.1117/12.715383
Show Author Affiliations
Wei Yuan, Univ. of California/Los Angeles (United States)
Tuling Lam, Univ. of California/Los Angeles (United States)
James Biggs, Artificial Muscle, Inc. (United States)
Liangbing Hu, Univ. of California/Los Angeles (United States)
Zhibin Yu, Univ. of California/Los Angeles (United States)
Soonmok Ha, Univ. of California/Los Angeles (United States)
Dongjuan Xi, Univ. of California/Los Angeles (United States)
Matthew K. Senesky, Artificial Muscle, Inc. (United States)
George Grüner, Univ. of California/Los Angeles (United States)
Qibing Pei, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 6524:
Electroactive Polymer Actuators and Devices (EAPAD) 2007
Yoseph Bar-Cohen, Editor(s)

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