Bistable switching of twist direction in a twisted-nematic liquid crystal cell

We propose a bistable liquid crystal mode based on switching of the twist direction in a conventional π / 2 -twisted nematic cell. Switching between the − π / 2 and + π / 2 twist states can be performed by applying vertical and/or in-plane electric fields. The proposed bistable mode has an infinite...

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Veröffentlicht in:Applied physics letters 2010-08, Vol.97 (6), p.063501-063501-3
Hauptverfasser: Song, Dong Han, Lee, Joong Ha, Lee, Seung Ju, Kim, Sang-il, Lim, Soonkwon, Shin, Sung Tae, Kim, Jae Chang, Yoon, Tae-Hoon
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Sprache:eng
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Zusammenfassung:We propose a bistable liquid crystal mode based on switching of the twist direction in a conventional π / 2 -twisted nematic cell. Switching between the − π / 2 and + π / 2 twist states can be performed by applying vertical and/or in-plane electric fields. The proposed bistable mode has an infinite memory time because the two stable twist states have the same elastic free energy.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3478842