Conducting polymers as simultaneous sensor-actuators

Toribio Fernández-Otero; Gemma Vázquez; Laura Valero

doi:10.1117/12.846095

9 April 2010 Conducting polymers as simultaneous sensor-actuators

Toribio Fernández-Otero, Gemma Vázquez, Laura Valero

Proceedings Volume 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010; 76420W (2010) https://doi.org/10.1117/12.846095
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

Environmental and electrical variables, as temperature, electrolyte concentration or driving current, influence oxidation and reduction oxidation rates of free-standing polypyrrole/DBSA/ClO₄- films. Under flow of a constant current for a constant time, decreasing electrical energies are consumed to oxidize or to reduce the film under increasing temperatures or rising electrolyte concentrations. By consuming the same charge under flow of rising constant currents, the consumed electrical energy increases. As conclusion the consumed electrical energy by flow of constant charges during oxidation, or reduction, of the film is a sensor of the electrochemical cell temperature, the electrolyte concentration or the flowing current. Those sensing capabilities seem to be a general property of the electrochemistry of conducting polymers. Any electrochemical based device, as actuators, polymeric batteries, smart membranes, smart drug delivery devices and others, are expected to sense environmental conditions while working. The sensing abilities of a complex actuator constituted by four polypyrrole films, two acting as electrodes (anodes or cathodes) and the other two as counter electrodes (cathodes or anodes, respectively) are presented. Experimental results are equivalent to sensing charge/discharge processes in all polymeric batteries.

Citation Download Citation

Toribio Fernández-Otero, Gemma Vázquez, and Laura Valero "Conducting polymers as simultaneous sensor-actuators", Proc. SPIE 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010, 76420W (9 April 2010); https://doi.org/10.1117/12.846095

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