Translator Disclaimer
6 April 2009 Nonlinear capacitance of ionic polymer-metal composites
Author Affiliations +
Ionic polymer-metal composites (IPMCs) form an important category of electroactive polymers. In this paper, a nonlinear, physics-based model is proposed for IPMC actuators. A key component in the proposed model is the nonlinear capacitance of IPMC, demonstrated by the nonlinear relationship between an applied step voltage and the induced charge. A nonlinear partial differential equation (PDE) is fully considered in analytical derivation of the capacitance of IPMC. The nonlinear capacitance is incorporated into a circuit model, which includes additionally the pseudo capacitance, the ion diffusion resistance, and the nonlinear DC resistance of the polymer. The model is verified in experiments.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zheng Chen, Dawn Rochelle Hedgepeth, and Xiaobo Tan "Nonlinear capacitance of ionic polymer-metal composites", Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 728715 (6 April 2009);

Back to Top