Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers

Seungmin Nam; Wontae Jung; Jun Hyuk Shin; Su Seok Choi

doi:10.1038/s41377-024-01470-w

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Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers

Original Articles

- Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers
- Light: Science & Applications Vol. 13, Issue 6, Pages: 1062-1074(2024)
- Affiliations：
  
  Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Korea
- Author bio：
  
  Su Seok Choi (choiss@postech.ac.kr)
- Funds：
- DOI：10.1038/s41377-024-01470-w
  CLC：
- Received：03 January 2024，
  
  Revised：2024-04-12，
  
  Accepted：07 May 2024，
  
  Published Online：22 May 2024，
  
  Published：30 June 2024
- Accepted：
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Nam, S. et al. Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers. Light: Science & Applications, 13, 1062-1074 (2024).
DOI：

Nam, S. et al. Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers. Light: Science & Applications, 13, 1062-1074 (2024). DOI： 10.1038/s41377-024-01470-w.

摘要

Abstract

Wavelength-tunable structural colors using stimuli-responsive materials

such as chiral liquid crystals (CLCs)

have attracted increasing attention owing to their high functionality in various tunable photonic applications. Ideally

on-demand omnidirectional wavelength control is highly desirable from the perspective of wavelength-tuning freedom. However

despite numerous previous research efforts on tunable CLC structural colors

only mono-directional wavelength tuning toward shorter wavelengths has been employed in most studies to date. In this study

we report the ideally desired omnidirectional wavelength control toward longer and shorter wavelengths with significantly improved tunability over a broadband wavelength range. By using areal expanding and contractive strain control of dielectric elastomer actuators (DEAs) with chiral liquid crystal elastomers (CLCEs)

simultaneous and omnidirectional structural color-tuning control was achieved. This breakthrough in omnidirectional wavelength control enhances the achievable tuning freedom and versatility

making it applicable to a broad range of high-functional photonic applications.

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references

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