Low-voltage switching of crease patterns on hydrogel surfaces.

Xu, Bin; Hayward, Ryan C · Adv Mater · 2013

basic_science · Level V

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Abstract

We report electrically driven creasing of polyelectrolye hydrogel surfaces with low switching voltages (2-4 V). Deep creases (up to 70% of the swelled film thickness) can be reversibly formed and eliminated on time-scales of a few seconds, with control of crease locations by micro-patterning of underlying electrodes.