High-Speed Electrically Actuated Elastomers with Strain Greater Than 100%

  • Ron Pelrine
    SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA.
  • Roy Kornbluh
    SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA.
  • Qibing Pei
    SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA.
  • Jose Joseph
    SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA.

抄録

<jats:p>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.</jats:p>

収録刊行物

  • Science

    Science 287 (5454), 836-839, 2000-02-04

    American Association for the Advancement of Science (AAAS)

被引用文献 (60)*注記

もっと見る

キーワード

詳細情報

問題の指摘

ページトップへ