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27 July 2004 The behavior of ionic polymer-metal composites in a multilayer configuration
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It has been observed that the Ionic Polymer-Metal Composite (IPMC) is both inherently resistive and capacitive. This allows for the material to be modeled using an equivalent RC circuit to describe the charging/discharging behavior associated with the IPMC. Typically, the model includes two resistors and two capacitors, which will primarily account for the effective electrodes on the surface of the IPMC (top and bottom). There will also be a resistor placed between the two RC circuits to account for material between the electrodes and the resistance due to ion migration through polymer matrix. In this paper we report our recent effort to extend such a model to accommodate a multi-layer IPMCs a swell as inter-digitated electrodes. As expected the observed electric characteristics of an IPMC subjected to an electric field is highly non-linear. This is believed to be due primarily to the particle electrodes on the IPMC surface, which is inherently both captive and resistive due to particle seperation and density. The advantage of using such a model is to realize the capacitive and resistive effect and use them for multi-layer configuration. We also present typical experimental data.
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Jason W. Paquette, Kwang Jin Kim, Doyeon Kim, and Woosoon Yim "The behavior of ionic polymer-metal composites in a multilayer configuration", Proc. SPIE 5385, Smart Structures and Materials 2004: Electroactive Polymer Actuators and Devices (EAPAD), (27 July 2004);

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