Low-voltage tunable color in full visible region using ferroelectric liquid-crystal-doped cholesteric liquid-crystal smart materials

Jia-De Lin; Jyun-Wei Lin; Chia-Rong Lee

doi:10.1117/12.2290044

8 February 2018 Low-voltage tunable color in full visible region using ferroelectric liquid-crystal-doped cholesteric liquid-crystal smart materials

Jia-De Lin, Jyun-Wei Lin, Chia-Rong Lee

Author Affiliations +

Proceedings Volume 10555, Emerging Liquid Crystal Technologies XIII; 105550B (2018) https://doi.org/10.1117/12.2290044
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Electrical tuning of photonic bandgap (PBG) of cholesteric liquid crystal (CLC) without deformation within the entire visible region at low voltages is not easy to achieve. This study demonstrates low-voltage-tunable PBG in full visible region with less deformation of the PBG based on smart materials of ferroelectric liquid crystal doped CLC (FLC-CLC) integrating with electrothermal film heaters. Experimental results show that the reflective color of the FLC-CLC can be low-voltage-tuned through entire visible region. The induced temperature change is induced by electrically heating the electrothermal film heaters at low voltages at near the smectic-CLC transition temperature. Coaxial electrospinning can be used to develop smart fibrous devices with FLC/CLC-core and polymer-shell which color is tunable in full visible region at low voltages.

Citation Download Citation

Jia-De Lin, Jyun-Wei Lin, and Chia-Rong Lee "Low-voltage tunable color in full visible region using ferroelectric liquid-crystal-doped cholesteric liquid-crystal smart materials", Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 105550B (8 February 2018); https://doi.org/10.1117/12.2290044

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