Electrooptical response in free standing films of ferroelectric liquid crystals

T. Tazawa, Yasuyuki Kimura, R. Hayakawa

Research output: Contribution to journalArticle

Abstract

By using free standing film of ferroelectric liquid crystals, we can realize a system with finite size along helical axis. The dynamics of free-standing film of FLCs has been studied by electrooptical measurement under weak sinusoidal electric field with dc bias field not to occur the switching of directors. We have measured the electrooptical spectra by varying the thickness of film L and the ratio of L to helical pitch P by changing temperature. The obtained spectra make good agreement with those predicted theoretically by Urbank and Zekš. In most cases, two relaxation modes are observed in the spectra. The relaxation frequency of the faster mode slightly varies around 1 kHz and that of the slower mode varies largely with the ratio L/P.

Original languageEnglish
Pages (from-to)387-394
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume367
DOIs
Publication statusPublished - Jan 1 2001
Externally publishedYes

Fingerprint

Liquid Crystals
Liquid crystals
Ferroelectric materials
liquid crystals
Electric fields
electric fields
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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