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THE PITCH AND CHIRAL CENTER DISTRIBUTION IN SmC* LIQUID CRYSTALS

QIAN XIANG-ZHONG

THE PITCH AND CHIRAL CENTER DISTRIBUTION IN SmC* LIQUID CRYSTALS

QIAN XIANG-ZHONG
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Publishing process
  • Received Date:  21 July 1997
  • Accepted Date:  05 October 1997
  • Published Online:  20 April 1998

THE PITCH AND CHIRAL CENTER DISTRIBUTION IN SmC* LIQUID CRYSTALS

  • 1. 淮南工业学院基础部,淮南 232001

Abstract: An expression concerning the variation of the pitch of SmC* liquid crystals is obtained by using the cell model in statistical mechanics with the introduction of the distribution factor ζχ of the chiral centers in the interaction potential between biaxial molecules containing multiple chiral centers.It shows the condition for inversion of helicity of the liquid crystals.With proper choice of the values of parameters involved we have calculated the variation of the pitch with temperature for liquid crystals TDOBAMCC,FLC,PACMB and H6/10.The calculated results agree well with the experimental data.

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