Programmable chiral liquid crystal elastomer with broadband tunability

Yexiaotong Zhang; Jinying Zhang; Jiaxing Yang; Xinye Wang

doi:10.1117/12.3023524

18 March 2024 Programmable chiral liquid crystal elastomer with broadband tunability

Yexiaotong Zhang, Jinying Zhang, Jiaxing Yang, Xinye Wang

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131043S (2024) https://doi.org/10.1117/12.3023524
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

Chiral liquid crystal elastomers amalgamate the micro-optical features of self-assembled nanostructures with their super-mechanical attributes, providing repeatable stimulus responsivity, which has a wide range of applications in MOEMS. This study presents a programmable chiral liquid crystal elastomer (CLCE) with broadband tunability. Stretching induces a blue shift in the wavelength of the reflection center of CLCEs. Upon stress relief, the elastomer can revert to its initial color. Significant structural color changes within the visible range, spanning over 200 nm in wavelength, are achieved. Control over the initial color of CLCEs is achieved by adjusting the chiral dopant concentration, establishing a relationship between the initial reflection center wavelength and the chiral dopant concentration, shifting from red at 1.9 wt.% to blue at 2.9 wt.%.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yexiaotong Zhang, Jinying Zhang, Jiaxing Yang, and Xinye Wang "Programmable chiral liquid crystal elastomer with broadband tunability", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131043S (18 March 2024); https://doi.org/10.1117/12.3023524

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KEYWORDS

Liquid crystals

Reflection

Color

Dopants

Reflectivity

Molecules

Molecular self-assembly

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