Abstract
We report studies on the influence of the alignment layers and the ionic impurities on the electro-optical behaviours of the twisted SmC* cells. A general expression of the internal electric field in the cell is given. Numerical results show clearly that the widening of the electro-optical response is connected to the alignment layers thicknesses. Dynamical studies of the ionic charges show that contrary to the classical SSFLC cells, ionic charges repartition is initially inhomogeneous in twisted SmC* cells. The azimuthal angle distribution and the transmitted light intensity are strongly affected by the ionic charges distribution. This model explain well the experimental behaviours of twisted SmC* cells.
Published Version
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