Large polar pretilt for the liquid crystal homologous series alkylcyanobiphenyl

Huang, Zhibin; Rosenblatt, Charles
January 2005
Applied Physics Letters;1/3/2005, Vol. 86 Issue 1, p011908
Academic Journal
Sufficiently strong rubbing of the polyimide alignment layer SE-1211 (Nissan Chemical Industries, Ltd.) results in a large pretilt of the liquid crystal director from the homeotropic orientation. The threshold rubbing strength required to induce nonzero pretilt is found to be a monotonic function of the number of methylene units in the homologous liquid crystal series alkylcyanobiphenyl. The results are discussed in terms of the dual easy axis model for alignment.


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