Publication Title

Physical Review E

Publication Date

7-15-2002

Document Type

Article

DOI

10.1103/PhysRevE.66.011701

Keywords

Elastomers

Disciplines

Physics

Abstract

Pressure-electric (hydrostatic piezoelectric) measurements are reported on bookshelf textures of a ferroelectric smectic-C (Sm C(*)) liquid crystal with a glass transition. The continuous variation of a partially fluid state to the solid glass enables one to trace how the piezoelectric effect depends on the consistency of the material. It was observed that in the Sm C(*) samples with poled glass the piezoelectric constants are comparable to conventional piezoelectric crystals and poled piezoelectric polymers. This implies their application possibilities. The magnitude of the piezoelectric constant in the glassy state depends very much on the poling conditions. The studies indicate that there are two counteracting effects, which cancel each other out in the Sm C(*) phase near the glass transition. Our analysis indicates that the pressure-induced director tilt change has a dominating effect both in the fluid and the glassy Sm C(*) states.

Comments

Copyright 2002 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.66.011701


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