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Helical twisting in reentrant nematic mixtures with optically active dopants

Authors
  • Chilaya, G.S.
  • Destrade, C.
  • Elashvili, Z.M.
  • Ivchenko, S.P.
  • Lisetski, L.N.
  • Vinokur, K.D.
Publication Date
Jan 01, 1985
Source
HAL
Keywords
Language
English
License
Unknown
External links

Abstract

Induced cholesteric systems with reentrant mesomorphism were observed by doping reentrant nematic mixtures with optically active tygogenyn and 1-menthol derivatives. Helix unwinding was observed on approaching TCh-SA in both cholesteric phases. Influence of the dopant concentration upon the stability of the intermediate smectic phase and helical pitch is discussed.

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