Abstract
Effects of the Leslie viscosity coefficients α i ( i = 1, 2, …, 5) of nematic liquid crystals (NLCs) with negative dielectric anisotropy (Δ ε < 0) on the electric-field-induced director reorientation in homeotropic NLC cells have been studied from the analysis of the transient current induced by step voltage application. The transient current in a homeotropic NLC cell with Δ ε < 0 was well reproduced by computer simulation, based on the theory of NLCs in which the flow effects and the free-slip boundary condition are taken into account. It is found that the response time of vertical alignment NLC displays is dominantly governed by α 2 and α 4 + α 5 of NLCs with Δ ε < 0.
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