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13 March 2024 Recent work in color changing polymer stabilized cholesteric liquid crystals in response to e-fields
Michael E. McConney, Brian Radka, Kyung Min Lee, Nicholas Godman, Timothy J. White, Timothy J. Bunning
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Proceedings Volume PC12907, Emerging Liquid Crystal Technologies XIX; PC1290703 (2024) https://doi.org/10.1117/12.3003147
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
Cholesteric liquid crystals (CLCs) have a self-assembled helicoidal structure that results in vibrant reflective colors. These chiral nematic materials can be stabilized by in-situ photopolymerization of reactive liquid crystal monomers present in the CLC mixture to form so-called polymer stabilized cholesteric liquid crystals (PS-CLC’s). These PSCLCs exhibit several novel electric field driven optical responses, including color changing and spectral bandwidth changes. This changes are associated with electrical deformations of the polymer network and the surrounding liquid crystals response to the network deformations. Here we present our recent results in this area, including work to elucidate the mechanistic details of the electrically driven response and our application of this mechanism to other liquid crystals.
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Michael E. McConney, Brian Radka, Kyung Min Lee, Nicholas Godman, Timothy J. White, and Timothy J. Bunning "Recent work in color changing polymer stabilized cholesteric liquid crystals in response to e-fields", Proc. SPIE PC12907, Emerging Liquid Crystal Technologies XIX, PC1290703 (13 March 2024); https://doi.org/10.1117/12.3003147
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KEYWORDS
Liquid crystals
Polymers
Color
Deformation
Mixtures
Doping
Electric fields
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