Switching and defect dynamics in multistable liquid crystal devices
  We investigate the switching dynamics of multistable nematic liquid crystal devices. In particular we identify a remarkably simple 2-dimensional (2D) device which exploits hybrid alignment at the surfaces to yield a bistable response. We also consider a 3-dimensional (3D) tristable nematic device with patterned anchoring, recently implemented in practice, and discuss how the director and disclination patterns change during switching. 
A. Tiribocchi, G. Gonnella, D. Marenduzzo, and E. Orlandini
cond-mat.soft