Temperature dependence of physical constants in binary-fluorinated liquid crystal mixtures

Abstract

The temperature dependence of dielectric constants and splay elastic constants for fluorinated phenyl bicyclohexane (PBC) binary liquid crystal (LC) mixtures is reported. The results show that the proportions of the constituent elements of binary mixtures strongly influence their anisotropic dielectric constants. For mixtures in which meta-para- and ortho-para-fluorine-substituted molecules are in equal proportion, the effectiveness of the anisotropic dielectric is equal to that with a single para-fluorine- substituted compound. The proportions of a mixture seldom affect the threshold voltage and splay elastic constants in an anti-parallel measurement cell.

Keywords:

• binary mixture
• dielectric constant
• fluorine liquid crystal
• splay elastic constant
• threshold voltage

Acknowledgements

The authors would like to thank Chisso Petrochemical Corp. for supplying LC materials.