Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

S. M. Morris; M. M. Qasim; K. T. Cheng; F. Castles; D. H. Ko; D. J. Gardiner; S. Nosheen; T. D. Wilkinson; H. J. Coles; C. Burgess; L. Hill

doi:10.1063/1.4818679

Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

S. M. Morris, M. M. Qasim, K. T. Cheng, F. Castles, D. H. Ko, D. J. Gardiner, S. Nosheen, T. D. Wilkinson, H. J. Coles, C. Burgess, L. Hill

光電科學與工程學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

25 引文斯高帕斯（Scopus）

摘要

We report the demonstration of an optically activated shutter based upon a short-pitch chiral nematic liquid crystal (LC) device sandwiched between crossed polarizers. This LC is comprised of photo-active chiral dopants. In the trans-state, the LC appears dark between crossed polarizers due to the very short pitch. As the pitch is extended through exposure to ultraviolet light, the device becomes transmissive reaching a maximum for a particular value of the pitch. As a result, it is possible to switch between the light and dark states by subjecting the device to visible light so as to cause a cis-trans photo-isomerisation.

原文	???core.languages.en_GB???
文章編號	101105
期刊	Applied Physics Letters
卷	103
發行號	10
DOIs	https://doi.org/10.1063/1.4818679
出版狀態	已出版 - 2 9月 2013

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10.1063/1.4818679

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title = "Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal",

abstract = "We report the demonstration of an optically activated shutter based upon a short-pitch chiral nematic liquid crystal (LC) device sandwiched between crossed polarizers. This LC is comprised of photo-active chiral dopants. In the trans-state, the LC appears dark between crossed polarizers due to the very short pitch. As the pitch is extended through exposure to ultraviolet light, the device becomes transmissive reaching a maximum for a particular value of the pitch. As a result, it is possible to switch between the light and dark states by subjecting the device to visible light so as to cause a cis-trans photo-isomerisation.",

author = "Morris, {S. M.} and Qasim, {M. M.} and Cheng, {K. T.} and F. Castles and Ko, {D. H.} and Gardiner, {D. J.} and S. Nosheen and Wilkinson, {T. D.} and Coles, {H. J.} and C. Burgess and L. Hill",

note = "Funding Information: One of the authors (SMM) gratefully acknowledges The Royal Society for financial support. D.-H. Ko acknowledges support from a grant of 2E23892 from KIST project.",

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T1 - Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

AU - Morris, S. M.

AU - Qasim, M. M.

AU - Cheng, K. T.

AU - Castles, F.

AU - Ko, D. H.

AU - Gardiner, D. J.

AU - Nosheen, S.

AU - Wilkinson, T. D.

AU - Coles, H. J.

AU - Burgess, C.

AU - Hill, L.

N1 - Funding Information: One of the authors (SMM) gratefully acknowledges The Royal Society for financial support. D.-H. Ko acknowledges support from a grant of 2E23892 from KIST project.

PY - 2013/9/2

Y1 - 2013/9/2

N2 - We report the demonstration of an optically activated shutter based upon a short-pitch chiral nematic liquid crystal (LC) device sandwiched between crossed polarizers. This LC is comprised of photo-active chiral dopants. In the trans-state, the LC appears dark between crossed polarizers due to the very short pitch. As the pitch is extended through exposure to ultraviolet light, the device becomes transmissive reaching a maximum for a particular value of the pitch. As a result, it is possible to switch between the light and dark states by subjecting the device to visible light so as to cause a cis-trans photo-isomerisation.

AB - We report the demonstration of an optically activated shutter based upon a short-pitch chiral nematic liquid crystal (LC) device sandwiched between crossed polarizers. This LC is comprised of photo-active chiral dopants. In the trans-state, the LC appears dark between crossed polarizers due to the very short pitch. As the pitch is extended through exposure to ultraviolet light, the device becomes transmissive reaching a maximum for a particular value of the pitch. As a result, it is possible to switch between the light and dark states by subjecting the device to visible light so as to cause a cis-trans photo-isomerisation.

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Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

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