Polarization Reversal Behavior of Transferred Ferroelectric Liquid Crystal Film in SmA pahse

Abstract

We have successfully realized a new method for direct evaluation of the boundary effects at air/LC and substrate/LC interfaces to the molecular alignment and dynamics using a thin transferred ferroelectric liquid crystal film. The polarization reversal current has been observed even above a Curie temperature in a thin film, which is more enhanced in thinner film. It was interpreted that the thin film had larger value of an averaged tilt angle of liquid crystal molecules compared with that of the thick film because of the surface clinic effect. The flexoelectric contribution to the polarization in the SmA phase was also discussed.