Virtual surfaces, director domains and the Freedericksz transition in polymer stabilized nematic liquid crystals

Details Virtual surfaces, director domains and the Freedericksz transition in polymer stabilized nematic liquid crystals Virtual surfaces, director domains and the Freedericksz transition in polymer stabilized nematic liquid crystals

2002-05-28

arxiv.org/abs/cond-mat/0205599v1

Appl. Phys. Lett. 81, 2986 (2002)

Physics

Condensed Matter

Soft Condensed Matter

14 pages, pdf

Scientific paper

10.1063/1.1515136

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.

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