The surface anchoring dependence of the dielectric constant of an FLC material showing electroclinic effect

Publisher Website
Google Scholar
Abstract
In an LC material 764E(BDH), which shows strong electroclinic effect both in SmA and SmC* phase, the phase transition points between SmA and SmC* phase observed through the divergent behavior of the dielectric constant are shown to vary remarkably depending on the surface anchoring potential. It is shown that the non polar part of the potential plays a role in determining the critical temperature, while the polar part contribute to determine the width of the curves. Actually the value of the surface potential is controlled in terms of the rubbing strength for polyimide orientation films and the thickness of the LC medium.