K. Lee, M. Mills, V. Reshetnyak, D. Evans, T. Bunning, M. McConney, V. Reshetnyak
{"title":"Electrically Switchable Color Changes in Lying Helix Cholesteric Liquid Crystals","authors":"K. Lee, M. Mills, V. Reshetnyak, D. Evans, T. Bunning, M. McConney, V. Reshetnyak","doi":"10.1109/rapid.2019.8864403","DOIUrl":null,"url":null,"abstract":"Cholesteric liquid crystal (CLC) is a one-dimensional photonic material with a self-assembled helical structure of either a right-handed or left-handed circular rotation of the nematic liquid crystal director along a helical axis. Previously we reported dynamic EO response in polymer stabilized cholesteric liquid crystals (PSCLCs) prepared with negative dielectric anisotropy (Δε < 0) nematic liquid crystal hosts, including DC field induced bandwidth broadening [1–4], red shifting tuning [5,6], blue shifting tuning [7] and scattering switching [8] responses. This dynamic EO response is explained by the electromechanical deformation of the polymer network directly affecting the pitch of the CLC.","PeriodicalId":143675,"journal":{"name":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/rapid.2019.8864403","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Cholesteric liquid crystal (CLC) is a one-dimensional photonic material with a self-assembled helical structure of either a right-handed or left-handed circular rotation of the nematic liquid crystal director along a helical axis. Previously we reported dynamic EO response in polymer stabilized cholesteric liquid crystals (PSCLCs) prepared with negative dielectric anisotropy (Δε < 0) nematic liquid crystal hosts, including DC field induced bandwidth broadening [1–4], red shifting tuning [5,6], blue shifting tuning [7] and scattering switching [8] responses. This dynamic EO response is explained by the electromechanical deformation of the polymer network directly affecting the pitch of the CLC.
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