弹性体
材料科学
介电弹性体
复合材料
人工肌肉
硅酮
执行机构
电活性聚合物
电介质
聚合物
拉伤
电极
电气工程
光电子学
内科学
工程类
物理化学
化学
医学
作者
Ron Pelrine,Roy Kornbluh,Qibing Pei,Jose Joseph
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2000-02-04
卷期号:287 (5454): 836-839
被引量:2983
标识
DOI:10.1126/science.287.5454.836
摘要
Electrical actuators were made from films of dielectric elastomers (such as silicones) coated on both sides with compliant electrode material. When voltage was applied, the resulting electrostatic forces compressed the film in thickness and expanded it in area, producing strains up to 30 to 40%. It is now shown that prestraining the film further improves the performance of these devices. Actuated strains up to 117% were demonstrated with silicone elastomers, and up to 215% with acrylic elastomers using biaxially and uniaxially prestrained films. The strain, pressure, and response time of silicone exceeded those of natural muscle; specific energy densities greatly exceeded those of other field-actuated materials. Because the actuation mechanism is faster than in other high-strain electroactive polymers, this technology may be suitable for diverse applications.
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