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Cell thickness dependence of liquid crystal parameters

  • Sood, Nitin (Engineering Materials Division, National Physical Laboratory) ;
  • Khosla, Samriti (Liquid Crystals Research Lab, Department of Physics, JCDAV College) ;
  • Singh, Darshan (Department of Physics, Punjabi University) ;
  • Bawa, S.S. (Engineering Materials Division, National Physical Laboratory)
  • Received : 2011.09.15
  • Accepted : 2011.12.12
  • Published : 2012.03.30
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Abstract

Ferroelectric liquid crystal parameters, spontaneous polarization, and transition temperature were studied as a function of cell thickness. These parameters were found to increase with increasing cell thickness, but an exception was observed for the transition temperature in the case of a thin cell. A simple Landau model is presented to interpret the theoretical and experimental observations. The anomalous behavior is attributed to the electroclinic effect and is explained using the Landau model.

Keywords

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