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Electric-field effects in the twist-bend nematic phase
Author(s): Claire Meyer; Ivan Dozov; Patrick Davidson; Geoffrey R. Luckhurst; Irena Dokli; Anamarija Knezevic; Andreja Lesac
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Paper Abstract

In the recently discovered Twist-Bend Nematic (NTB) phase, the nematic director is spontaneously distorted and twisted along a conical helix with an extremely short pitch, ~10 nm. We have investigated the behavior of the NTB phase subject to an electric-field. We show that, due to the periodic NTB structure, the electro-optic effects are not nematic-like but are close analogs to those in the smectic and cholesteric phases. In particular, we have studied the fast (sub-microsecond) flexoelectrically-induced rotation of the optic axis, which is similar to the electroclinic effect in the SmA* phase and the flexoelectric response of short-pitch cholesterics. We discuss the possible applications of the fast NTB electro-optic effects.

Paper Details

Date Published: 8 February 2018
PDF: 18 pages
Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 105550Z (8 February 2018); doi: 10.1117/12.2301296
Show Author Affiliations
Claire Meyer, Univ. de Picardie Jules Verne (France)
Ivan Dozov, Lab. de Physique des Solides, Univ. Paris-Sud, CNRS (France)
Patrick Davidson, Lab. de Physique des Solides, Univ. Paris-Sud, CNRS (France)
Geoffrey R. Luckhurst, Univ. of Southampton (United Kingdom)
Irena Dokli, Rudjer Boskovic Institute (Croatia)
Anamarija Knezevic, Rudjer Boskovic Institute (Croatia)
Andreja Lesac, Rudjer Boskovic Institute (Croatia)

Published in SPIE Proceedings Vol. 10555:
Emerging Liquid Crystal Technologies XIII
Liang-Chy Chien, Editor(s)

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