Abstract
The change of the optical axis in a nematic liquid crystal (NLC) is connected with a macroscopic material flow (backflow), therefore two basic equations (force balance and torque balance equation) have to be discussed to get the transient behavior of the NLC in an electric field. For a homogeneous and a homeotropically aligned NLC the transient times are inversely proportional to the square of the sample thickness and inversely proportional to the normalized voltage (U/U 0)2−1.U 0 is the threshold voltage. The agreement between the experimental and the theoretical results is quite good. From the calculated formula the possible duty-cycle for multiplexing a NLC can be estimated.
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