Analysis of Nematic Liquid Crystal Orientation at Interface between LC and

Abstract

The azimuthal orientational distribution of the LC molecule at an interface was investigated by the Brewster Angle Reflection (BAR) method. For the BAR method, there is no reflection from an interface between air and a glass plate when P-polarized light are incident from air on a glass plate at the Brewster angle. The transmited light is absorbed in the bulk LC which was doped with a dichroic dye and the reflected light includes the imformation about the LC molecular orientation at an interface between LC and alignment film. From experimantal results of the BAR method, it was found that polar plots of the reflection intensity as a function of rotation angle reflects the azimuthal orientational distribution of LC molecules at an interface. Morever, experimantal results was in good agreement with numerically calculated ones.