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Robust measurement of flexoelectro-optic switching with different surface alignments

Sandford O’Neill, John J.; Fells, Julian A. J.; Welch, Chris; Mehl, Georg; Yip, Wing C.; Wilkinson, Timothy D.; Booth, Martin J.; Elston, Steve J.; Morris, Stephen M.


John J. Sandford O’Neill

Julian A. J. Fells

Chris Welch

Wing C. Yip

Timothy D. Wilkinson

Martin J. Booth

Steve J. Elston

Stephen M. Morris


The alignment of chiral nematic liquid crystals in the so-called uniform lying helix geometry allows for the observation and exploitation of the flexoelectro-optic effect. However, high-quality uniform lying helix alignment is difficult to achieve reliably, and this can potentially impact the accuracy of the measurements made on the flexoelectro-optic switching behaviour. Here, we show that, using an appropriate method, it is possible to make measurements of the flexo-electric coefficients that are not substantially influenced by the alignment quality.


Sandford O’Neill, J. J., Fells, J. A. J., Welch, C., Mehl, G., Yip, W. C., Wilkinson, T. D., …Morris, S. M. (2019). Robust measurement of flexoelectro-optic switching with different surface alignments. Journal of applied physics, 125(9),

Journal Article Type Article
Acceptance Date Jan 29, 2019
Online Publication Date Mar 4, 2019
Publication Date Mar 7, 2019
Deposit Date Mar 6, 2019
Publicly Available Date Mar 6, 2019
Journal Journal of Applied Physics
Print ISSN 0021-8979
Electronic ISSN 1089-7550
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 125
Issue 9
Article Number 093104
Keywords General Physics and Astronomy
Public URL
Publisher URL
Additional Information Received: 2018-12-19; Accepted: 2019-01-29; Published: 2019-03-04


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