1b10 Periodic helical structure and dispersion relations of the orientational relaxation modes in cholesteric liquid crystals
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- Yoshioka Jun
- Department of Physics, Kyoto University
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- Takanishi Yoichi
- Department of Physics, Kyoto University
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- Yamamoto Jun
- Department of Physics, Kyoto University
Bibliographic Information
- Other Title
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- 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
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- Proceedings of Japanese Liquid Crystal Society Annual meeting
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Proceedings of Japanese Liquid Crystal Society Annual meeting 2012 (0), _1b10-1_-_1b10-2, 2012
THE JAPANESE LIQUID CRYSTAL SOCIETY
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Details 詳細情報について
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- CRID
- 1390282680664863872
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- NII Article ID
- 110009668786
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- ISSN
- 24325988
- 18803490
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed