Effect Molecular Arrangement of Alignment Film for Liquid Crystals

Abstract

We have studied the direction of liquid crystals on multilayer alignment films composed of Langmuir-Blodgett films deposited onto rubbed films. Depositing more than three layers of Langmuir-Blodgett film onto the rubbed films changed the direction of the liquid crystals. The arrangement of the surface molecules of the alignment film was found to determine the alignment of the liquid crystals, and the use of a molecular layer of 3 nm thickness resulted in the alignment of the liquid crystals.