1b10 Periodic helical structure and dispersion relations of the orientational relaxation modes in cholesteric liquid crystals

DOI

Bibliographic Information

Other Title
  • 1b10 コレステリック液晶のらせん周期構造と配向緩和モードの分散関係 : 実験と理論(ソフトマター,口頭発表,2012年日本液晶学会討論会)

Description

We analyzed orientational relaxation modes in cholesteric liquid crystals using dynamic light scattering(DLS) and electro-optic(EO) response measurements. Assuming that the helical pitch is constant in the deformation process, we theoretically predicted the dispersion relation of two orthogonal relaxation modes in which the director slightly deforms from equilibrium state, and compared the modes with experimental results. Dispersion relation measured in the DLS completely satisfies our theoretical prediction, and extrapolated relaxation frequency (q→0) also coincides with that obtained by the EO measurement. Furthermore, it was found that the helical pitch dependence was well-explained by our theoretical model.

Journal

Details 詳細情報について

  • CRID
    1390282680664863872
  • NII Article ID
    110009668786
  • DOI
    10.11538/ekitou.2012.0__1b10
  • ISSN
    24325988
    18803490
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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