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Proceedings Paper

Carbon-polymer-ionic liquid composite as a motion sensor
Author(s): Indrek Must; Friedrich Kaasik; Inga Põldsalu; Urmas Johanson; Andres Punning; Alvo Aabloo
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Paper Abstract

High surface area carbon, ionic liquid and polymer are incorporated in an electromechanically active composite. This laminate bends when voltage (typically less than 3 V) is applied between the electrodes, and generates voltage and current when bent with an external force. By suitable optimization, the material can be used either as an actuator, energy storage element (supercapacitor) or sensor. Strain caused by bending promotes dislocation of ions in the micropores of carbon. As a result, the charge separation occurs because ions of ionic liquid are likely trapped in the micropores of diameters close to the ion sizes.

Paper Details

Date Published: 3 April 2012
PDF: 7 pages
Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 834019 (3 April 2012); doi: 10.1117/12.915268
Show Author Affiliations
Indrek Must, Univ. of Tartu (Estonia)
Friedrich Kaasik, Univ. of Tartu (Estonia)
Inga Põldsalu, Univ. of Tartu (Estonia)
Urmas Johanson, Univ. of Tartu (Estonia)
Andres Punning, Univ. of Tartu (Estonia)
Alvo Aabloo, Univ. of Tartu (Estonia)

Published in SPIE Proceedings Vol. 8340:
Electroactive Polymer Actuators and Devices (EAPAD) 2012
Yoseph Bar-Cohen, Editor(s)

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