Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.367, 2939-2946, 2001
Controlling surface alignment on nanoscopically tailored competing domains
The alignment of the liquid crystal on the alignment layer is determined by the anchoring energy and the elastic energy. In the case of uniform alignment, the anchoring energy generally overwhelms the elastic energy to make an uniform alignment over all the area. But the behavior of the liquid crystal on artificially designed multi-domains system with competing directions of easy axis can be different. The competition between two factors is expected to force the system to stabilize in the balanced configuration that could be different from which is induced microscopically by the anchoring energy. We used an atomic force microscopy (AFM) to create micron and nanometer size multi-domains with two alignment directions. With changing the domain size, we observed a variety of different behavior of the liquid crystal texture.