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2 August 2021 Rewriting bulk photoalignment of nematic liquid crystals in a two-step exposure system
Sarah Hicks, Kyung Min Lee, Michael E. McConney, Nelson Tabiryan, Timothy J. Bunning
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Proceedings Volume 11807, Liquid Crystals XXV; 118070I (2021) https://doi.org/10.1117/12.2594786
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States
Abstract
This presentation reveals the re-writability property of azobenzene liquid crystal photoalignment. Stable in thermal fluctuations, one can change existing photoalignment by exposing it to polarized light in the visible regime. One can use this unique property by patterning photoalignment through the liquid crystal bulk in that the sample’s front and back have differing director orientations. Photoalignment using linear polarized light as well as complex polarizations will be covered. No surface alignment on sample substrates is necessary because the azobenzene is mixed with the liquid crystal in-situ in sample preparation.
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Sarah Hicks, Kyung Min Lee, Michael E. McConney, Nelson Tabiryan, and Timothy J. Bunning "Rewriting bulk photoalignment of nematic liquid crystals in a two-step exposure system", Proc. SPIE 11807, Liquid Crystals XXV, 118070I (2 August 2021); https://doi.org/10.1117/12.2594786
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KEYWORDS
Liquid crystals
Polarization
Wave plates
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