Surface Alignment of Liquid Crystal Multilayers Evaporated on a Photoaligned Polyimide Film Observed by Surface Profiler

by Thet Naing Oo et al. AZojomo, September 2005 The investigation of the surface alignment of liquid crystal (LC) multilayers evaporated on a photoaligned polyimide vertical alignment (PI-VA) film was carried out by means of a novel three-dimensional (3-D) surface profiler. The photoinduced anisotropy of the partially UV-exposed PI-VA film can be visualized as a topological image of LC multilayers. It seems that the topology of LC multilayers indicates the orientational distribution of LC molecules on the treated film. Moreover, it was shown that the surface profiler can be used to produce non-contact images with high vertical resolution (~ 0.01 nm). Read more