Liquid-crystal orientational bistability and nematic storage effects

A new class of nematic liquid-crystal storage effects with potential display applications is described. We have developed structures, produced by special surface alignment patterns, exhibiting bistable configurations. Switching between states has been demonstrated with both electric and magnetic fields. The movement of disclinations and the topological distinction between states play essential roles in bistable switching. The properties of the bistable states and a proposed switching mechanism are described.