Electromechanical nonionic gels

Details Electromechanical nonionic gels Electromechanical nonionic gels

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10b3016z&link_type=abstract

New Journal of Physics, Volume 10, Issue 2, pp. 023016 (2008).

Physics

Scientific paper

The electrically induced bending of nonionic polyvinyl alcohol gels, bending over 90° within 100 ms, is the fastest motion in the field of electroactuation of polymers. This rapid bending produces initial mechanical vibrations followed by a durable displacement that contrasts highly with the relaxation observed with elastomer- and polyelectrolyte-based actuators. Here, we characterize the bending process using video imaging and laser detecting technology and establish a physical model for the electromechanical conversion, based on our observation of an induced solvent migration. Our results show excellent agreement between the measurements and calculations. This study provides general rules for understanding the electrically induced bending of isotropic dielectrics and may also shed light on nonmuscular biological engines.

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