Abstract
We have reported on a director deformation on the basis of a unified anchoring energy [Phys. Rev. E, 52,681 (1995)]. The analytical treatment of this theory predicts that a surface weak anchoring condition makes an optical bistability in a Super Twisted Nematic cell possible. To confirm the prediction, we carried out experimentally the control of an anchoring strength using PolyVinyl Cinnamete films. A simple method is also proposed to measure a unified anchoring energy from the saturation voltage.
