The focus of this research is to optimize the performance of a high energy density active material based upon biological processes. This material uses controlled transport of charge and fluid across a selectively permeable membrane to achieve bulk deformation, similar to nastic movements in the plant kingdom. The membrane utilizes biological ion pumps, ion channels, and ion exchangers surrounding a spherical inclusion in a polymer matrix. This work examines the effect of the geometry of the inclusion and the surrounding matrix on the predictions of the model.

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