Birefringence effect of two directionally rubbed liquid crystal cells

  • Huang, Chi Yen (Institute of Photonics, National Changhua University of Education) ;
  • Huang, Yao Sheng (Institute of Photonics, National Changhua University of Education) ;
  • Tian, Jing Rui (Institute of Photonics, National Changhua University of Education)
  • Published : 2005.07.19

Abstract

The alignment property of liquid crystals on the two-easy axes substrate is investigated. The two-easy axes substrate frustrates the orientation of the LCs next to the substrate, and hence influences the birefringence of the LC cell. Experimental findings reveal that the ratio of the rubbing strengths in the different rubbing directions and the cell thickness substantially influence the birefringence of the LC cell. The surface anchoring energetic competition between the different rubbing directions contributes to the observed results.

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