Piezoelectricity of a ferroelectric liquid crystal with a glass transition

A. Jákli, T. Tóth-Katona, T. Scharf, M. Schadt, A. Saupe

Research output: Contribution to journalArticle

6 Citations (Scopus)

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.

Original languageEnglish
Article number011701
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume66
Issue number1
DOIs
Publication statusPublished - Jul 2002

Fingerprint

Piezoelectricity
piezoelectricity
Glass Transition
Liquid Crystal
liquid crystals
glass
Fluid
Hydrostatics
Cancel
Tilt
piezoelectric crystals
Texture
fluids
Crystal
Polymers
hydrostatics
Trace
Imply
textures
polymers

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Mathematical Physics

Cite this

Piezoelectricity of a ferroelectric liquid crystal with a glass transition. / Jákli, A.; Tóth-Katona, T.; Scharf, T.; Schadt, M.; Saupe, A.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 66, No. 1, 011701, 07.2002.

Research output: Contribution to journalArticle

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