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Issue 18, 2010

Capillary origami controlled by an electric field

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Abstract

We show experimentally how an electric field can control the folding and unfolding of a thin elastic membrane around a liquid droplet. As the voltage is increased above a critical value the membrane unfolds completely. The transition is reversible, although the structure closes back for a lower critical tension. We propose scaling laws for these critical voltages based on the interaction between surface tension, elastic and electric energies. These scaling laws are in qualitative agreement with experiments and a simplified 2D simulation of the problem, providing a useful tool for designing practical micro-devices actuated by an electric field.

Graphical abstract: Capillary origami controlled by an electric field

Supplementary files

Article information


Submitted
18 Feb 2010
Accepted
12 Apr 2010
First published
01 Jul 2010

Soft Matter, 2010,6, 4491-4496
Article type
Paper

Capillary origami controlled by an electric field

M. Piñeirua, J. Bico and B. Roman, Soft Matter, 2010, 6, 4491 DOI: 10.1039/C0SM00004C

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