The critical field of the Freedericksz transition and switching dynamics are investigated for polymer stabilized nematic liquid crystals as a function of polymer concentration. A simple phenomenological model is proposed to describe the observed critical field and dynamic response time behaviors as a function of concentration. In this model the polymer fibrils form director domains, which are bounded by virtual surfaces with a finite anchoring energy. The Freedericksz transition occurs independently within each of these domains.
Kossyrev, P. A.,
Priezjev, N. V.,
Pelcovits, R. A.,
& Crawford, G. P.
(2002). Virtual Surfaces, Director Domains and the Freedericksz Transition in Polymer Stabilized Nematic Liquid Crystals. Applied Physics Letters, 81, 2986.