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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
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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.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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Cited by 5 scholarly publications.
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KEYWORDS
Molecules

Distortion

Dielectrics

Electro optics

Anisotropy

Modulation

Liquid crystals

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