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Proceedings Paper

Redox level-dependent impedance model for conjugated polymer actuators
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Paper Abstract

The reduction-oxidation (redox) level of a conjugated polymer has significant impact on its electro-chemo-mechanical properties, such as conductivity, impedance, and Young's modulus. A redox level-dependent impedance model is developed in this paper by including the dynamics of ion diffusion, ion migration, and redox reactions. The model, in the form of a transfer function, is derived through perturbation analysis around a given redox level. Experimental measurements conducted under different redox conditions correlate well with the model prediction and thus validate the proposed model. This work, for the first time, incorporates the effect of redox level into the dynamics of conjugated polymers, and facilitates the future use of nonlinear control methods for the effective control of these materials.

Paper Details

Date Published: 10 April 2008
PDF: 10 pages
Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 69270Z (10 April 2008); doi: 10.1117/12.776548
Show Author Affiliations
Yang Fang, Michigan State Univ. (United States)
Xiaobo Tan, Michigan State Univ. (United States)
Gürsel Alici, Univ. of Wollongong (Australia)


Published in SPIE Proceedings Vol. 6927:
Electroactive Polymer Actuators and Devices (EAPAD) 2008
Yoseph Bar-Cohen, Editor(s)

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