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Hidenori Okuzaki, Takayoshi Kuwabara, Keiichi Funasaka and Tomooki Saido Humidity-Sensitive Polypyrrole Films for Electro-Active Polymer Actuators Advanced Functional Materials 23

Article first published online: 18 APR 2013 | DOI: 10.1002/adfm.201203883

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Humidity-sensitive polypyrrole films can provide an insight to the development of an origami robot fabricated by folding the polypyrrole film. The principle lies in the electrically induced changes in the elastic modulus caused by desorption of water vapor due to Joule heating, which is responsible for amplifying a contraction of the film to more than a 100-fold expansion.

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