W. C. Yip
A cholesteric liquid crystal device having stable uniform lying helix structure
Yip, W. C.; Welch, Chris; Mehl, Georg H.; Wilkinson, Timothy D.
Authors
Chris Welch
Georg H. Mehl
Timothy D. Wilkinson
Abstract
A cholesteric liquid crystal device having the uniform lying helix (ULH) structure shows stable and reversible characteristics and it has been demonstrated for the analogue modulation in 10 micro-second response time at room temperature. The device comprises a polymer-free chiral nematic liquid crystal mixture and the photoalignment layer is irradiated by the UV light to cause a preferred orientation of the liquid crystal. The ULH structure is obtained by cooling the liquid crystal mixture from the isotropic phase transition temperature in the presence of electric field. On the electrical and thermal cycling, no noticeable hysteresis has been observed. In addition, the tilt angle and response time have been measured in good agreement with Meyer's theory on the flexoelectric effect in liquid crystals.
Citation
Yip, W. C., Welch, C., Mehl, G. H., & Wilkinson, T. D. (2020). A cholesteric liquid crystal device having stable uniform lying helix structure. Journal of Molecular Liquids, 299, Article 112141. https://doi.org/10.1016/j.molliq.2019.112141
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 14, 2019 |
Online Publication Date | Nov 15, 2019 |
Publication Date | Feb 1, 2020 |
Deposit Date | Jan 31, 2020 |
Publicly Available Date | Nov 16, 2020 |
Journal | Journal of Molecular Liquids |
Print ISSN | 0167-7322 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 299 |
Article Number | 112141 |
DOI | https://doi.org/10.1016/j.molliq.2019.112141 |
Keywords | Physical and Theoretical Chemistry; Spectroscopy; Materials Chemistry; Atomic and Molecular Physics, and Optics; Electronic, Optical and Magnetic Materials; Condensed Matter Physics |
Public URL | https://hull-repository.worktribe.com/output/3237631 |
Files
JMolLiq 2019 Accepted
(1 Mb)
PDF
Publisher Licence URL
https://creativecommons.org/licenses/by-nc-nd/4.0/
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