Publication: Millisecond-fast electro-optics of liquid-crystal-metasurfaces
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2020
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© 2020 Author(s).We study electrically driven switching of liquid-crystal-metasurfaces between diffracting and transmitting states. We fabricate periodic metasurfaces that self-assemble upon stripe patterns and scatter light symmetrically into several diffraction orders as well as superperiodic ones that form upon more complex patterns and diffract light efficiently into a single order. The voltage applied across the metasurfaces straightens the liquid crystal, suppresses the diffraction and enhances the transmission. We observe universal features of the switching dynamics: the times of transition from diffracting to transmitting state decrease down to a millisecond as the driving voltage increases up to 6-8 volts, while the main part of the relaxation back into diffracting state occurs within a few milliseconds. We interpret the remarkably fast electro-optics in terms of superimposed exponential modes that are by an order of magnitude faster than those of analogous conventional liquid crystal cells.
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Millisecond-fast electro-optics of liquid-crystal-metasurfaces / Kasyanova, I.V. [et al.] // AIP Conference Proceedings. - 2020. - 2300. - 10.1063/5.0031728
URI
https://www.doi.org/10.1063/5.0031728
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https://openrepository.mephi.ru/handle/123456789/22864
https://www.scopus.com/record/display.uri?eid=2-s2.0-85098066338&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000656159400016
https://openrepository.mephi.ru/handle/123456789/22864