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2008
March 2008
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On the Cover

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Electroactive Polymer Actuators and Sensors. Schematic illustration of (top) a structure of ionic polymer–metal composites without an applied electric field, and (bottom) a structure of ionic polymer–metal composites when an electric field is applied. (Image courtesy of K. Jung, I.-S. Park, and K. J. Kim.) See the technical theme that begins on p. 173.