On the non-symmetric planar aligned NLC cell |
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| Authors: | Yang Guo Chen Corresponding author Zhang Zhi Guo Li Li Guan Rong Hua |
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| Affiliation: | 1. Physics Institute of Hebei University of Technology , Tianjin 300?130, PR China;2. Physics Institute of Hebei University of Technology , Tianjin 300?130, PR China;3. North China Electric Power University , Baoding 071?003, PR China |
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| Abstract: | The planar aligned nematic liquid crystal cell with different anchoring for the two substrates (i.e. a non-symmetric NLC cell) is investigated by an analytical method. We deduce the basic equations and the boundary conditions of the tilt angle θ of the LC director. Expressions for threshold and saturation magnetic field are obtained, and numerical results of these two quantities with variation in anchoring parameters of the two substrates are given. A symmetry breaking parameter Δ is introduced and the relations between Δ and applied field, as well as the two sets of anchoring parameters are discussed in detail. A feasible experimental plan for measurement of anchoring strengths of a series of different substrates is proposed. |
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