Photon correlation spectroscopy of the phase mode in a ferroelectric liquid crystal under a DC electric field

Yasuyuki Kimura, Hiroshi Inoue, Reinosuke Hayakawa

Research output: Contribution to journalArticlepeer-review

Abstract

The phase mode in a ferroelectric liquid crystal has been studied by photon correlation spectroscopy under a dc electric field applied perpendicular to the helical axis of the liquid crystal. The parabolic continuous dispersion of the inverse correlation time τ-1 against the scattering wave number splits into two branches with a gap at nearly half the wave number at which τ-1 takes a minimum value. The gap frequency is found to increase in proportion to the applied electric field below the critical field Ec where the helical structure completely unwinds. Above Ec, τ-1 increases continuously with the wave number and shows no minimum. The experimental findings are compared with the recent predictions based on the phenomenological theory.

Original languageEnglish
Pages (from-to)L788-L790
JournalJapanese Journal of Applied Physics
Volume36
Issue number6
DOIs
Publication statusPublished - 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy

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