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 journalArticle

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
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume36
Issue number6
Publication statusPublished - Dec 1 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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