28 March 2011 Self-sensing properties of carbon-polymer composite (CPC) actuators
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Abstract
CPC (carbon-polymer composite) is a type of low voltage electromechanically active material, which is often built using two layers of electrodes containing nanoporous carbon separated by a thin ion-permeable polymer film; ionic liquid is used as electrolyte. In cantilever configuration, while low voltage (3 V) is applied to these electrodes, the CPC sheet undergoes bending. To date, virtually no research into sensing properties of these materials has been conducted. In order to determine the tip displacement (curvature) of the CPC actuator, change of surface resistance in the process of bending is measured. Within the scope of this paper, it is also to investigate whether the acquired signals are feasible for use as a feedback to the actuator's driving mechanism and thus creating a self-sensing CPC device. Experimental data is presented to report that both resistive and capacitive effects are present on surface electrodes and alter during the actuator's work-cycle.
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Karl Kruusamäe, Andres Punning, Alvo Aabloo, "Self-sensing properties of carbon-polymer composite (CPC) actuators", Proc. SPIE 7976, Electroactive Polymer Actuators and Devices (EAPAD) 2011, 79760Q (28 March 2011); doi: 10.1117/12.880386; https://doi.org/10.1117/12.880386
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