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Piezoelectricity of Cholesteric Elastomers

Robert A. Pelcovits·Robert B. Meyer
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Abstract

We consider theoretically the properties of piezoelectricity in cholesteric elastomers. We deduce using symmetry considerations the piezoelectric contributions to the free energy in the context of a coarse-grained description of the material. In contrast to previous work we find that compressions or elongations of the material along the pitch axis do not produce a piezoelectric response, in agreement with fundamental symmetry considerations. Rather only suitable shear strains or local rotations produce a polarization. We propose some molecular mechanisms to explain these effects.

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Robert A. Pelcovits, Robert B. Meyer. 1994-12-20. Piezoelectricity of Cholesteric Elastomers. https://doi.org/10.1051/jp2%3A1995163

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