Electric-field effects in the twist-bend nematic phase

Claire Meyer; Ivan Dozov; Patrick Davidson; Geoffrey R. Luckhurst; Irena Dokli; Anamarija Knezevic; Andreja Lesac

doi:10.1117/12.2301296

8 February 2018 Electric-field effects in the twist-bend nematic phase

Claire Meyer, Ivan Dozov, Patrick Davidson, Geoffrey R. Luckhurst, Irena Dokli, Anamarija Knezevic, Andreja Lesac

Proceedings Volume 10555, Emerging Liquid Crystal Technologies XIII; 105550Z (2018) https://doi.org/10.1117/12.2301296
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

In the recently discovered Twist-Bend Nematic (N_TB) 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 N_TB phase subject to an electric-field. We show that, due to the periodic N_TB 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 N_TB electro-optic effects.

Citation Download Citation

Claire Meyer, Ivan Dozov, Patrick Davidson, Geoffrey R. Luckhurst, Irena Dokli, Anamarija Knezevic, and Andreja Lesac "Electric-field effects in the twist-bend nematic phase", Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 105550Z (8 February 2018); https://doi.org/10.1117/12.2301296

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