Topological ferroelectric bistability in a polarization-modulated orthogonal smectic liquid crystal
We report a bent-core liquid crystal (LC) compound exhibiting two fluid smectic phases in which two-dimensional, polar, orthorhombic layers order into three-dimensional ferroelectric states. The lower-temperature phase has a uniform polarization field which responds in an analog fashion to applied electric field. The higher-temperature phase is a new smectic state with periodic undulation of the polarization, structurally modulated layers, and a bistable response to applied electric field which originates in the periodically splay-modulated bulk of the LC rather than by surface stabilization at the cell boundaries.
Zhu, Chenhui,Shao, Renfan,Reddy, R. Amaranatha,Chen, Dong,Shen, Yongqiang,Gong, Tao,Glaser, Matthew A.,Korblova, Eva,Rudquist, Per,MacLennan, Joseph E.,Walba, David M.,Clark, Noel A.
p. 9681 - 9687
(2012/07/14)
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