Structure analysis of liquid crystal free standing film by using transmission ellipsometry

Abstract

The liquid crystal free standing film (LC-FSF) has been applied to investigate structures of the anti-ferroelectric liquid crystal with sub phases. By transmission ellipsometry of LC-FSFs with photoelastic modulator (PEM), dependence of phase difference on the number of layers and tempratures, on Mcident angles of He-Ne laser, were studied. Theoretical analysis based by 4×4 matrix was performed. From the experiment and the theory, interesting results were obtained about the structure of LC-FSFs.