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Issue 39, 2018
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Theory of polymer-electrolyte-composite electroactuator sensors with flat or volume-filling electrodes

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Abstract

In reverse actuation, a voltage/electrical-current signal can be generated from applying a mechanical force to an electroactuator. Such processes are of interest in touch sensing and soft robotics applications. We develop a classical density functional theory of reverse actuation for polymer-electrolyte-composite electroactuators, which treats mobile cations in the same spirit as forward actuation (curving in response to applied voltage). The proposed framework is applied to electroactuators with micro-structured porous electrodes (with cylindrical or slit pores) and flat electrodes, the dynamic response of which has to be modelled differently. Open- and short-circuit operation modes are investigated separately. A detailed analysis of the proposed theory indicates the preferred architectures for sensing, depending on the operation regimes.

Graphical abstract: Theory of polymer-electrolyte-composite electroactuator sensors with flat or volume-filling electrodes

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Supplementary files

Article information


Submitted
13 Jul 2018
Accepted
15 Aug 2018
First published
15 Aug 2018

Soft Matter, 2018,14, 7996-8005
Article type
Paper

Theory of polymer-electrolyte-composite electroactuator sensors with flat or volume-filling electrodes

Z. A. H. Goodwin and A. A. Kornyshev, Soft Matter, 2018, 14, 7996
DOI: 10.1039/C8SM01438H

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