Electric-field effects in the twist-bend nematic phase
Electric-field effects in the twist-bend nematic phase
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.
chiral nematic, chiral smectic phases, electro-optic, flexoelectric effect, Nematic liquid crystal, twist-bend nematic phase
1-18
Meyer, Claire
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Dozov, Ivan
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Davidson, Patrick
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Luckhurst, Geoffrey R.
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Dokli, Irena
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Knezevic, Anamarija
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Lesac, Andreja
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8 February 2018
Meyer, Claire
2e557831-5500-4cc2-a7fb-36d4c71d5f50
Dozov, Ivan
81414aa2-d72f-4a93-897b-ef0c394ab30d
Davidson, Patrick
f21cdb72-a3b9-4fcc-ba18-aa5160aa0a87
Luckhurst, Geoffrey R.
80cbbfc6-d5c7-4f46-bacd-1cfb42b56553
Dokli, Irena
c24d2906-ff0e-4116-b2f0-b32b8fec1c5d
Knezevic, Anamarija
f10054d6-f6a6-4e9c-b574-3a30f4e7edf6
Lesac, Andreja
f3ae43ed-3b6c-4ca9-ae32-b1bdb71b661f
Meyer, Claire, Dozov, Ivan, Davidson, Patrick, Luckhurst, Geoffrey R., Dokli, Irena, Knezevic, Anamarija and Lesac, Andreja
(2018)
Electric-field effects in the twist-bend nematic phase.
In Emerging Liquid Crystal Technologies XIII.
vol. 10555,
SPIE.
.
(doi:10.1117/12.2301296).
Record type:
Conference or Workshop Item
(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.
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More information
Published date: 8 February 2018
Venue - Dates:
2018 Emerging Liquid Crystal Technologies XIII, , San Francisco, United States, 2018-01-29 - 2018-01-31
Keywords:
chiral nematic, chiral smectic phases, electro-optic, flexoelectric effect, Nematic liquid crystal, twist-bend nematic phase
Identifiers
Local EPrints ID: 420720
URI: http://eprints.soton.ac.uk/id/eprint/420720
PURE UUID: 2f3a5971-b6cb-4889-8342-033402f3991e
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Date deposited: 14 May 2018 16:30
Last modified: 15 Mar 2024 19:55
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Contributors
Author:
Claire Meyer
Author:
Ivan Dozov
Author:
Patrick Davidson
Author:
Irena Dokli
Author:
Anamarija Knezevic
Author:
Andreja Lesac
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