Spectral decoupling regulation through targeted ion migration in electro-optical resonators

Min Li, Yaowu Li, Shan Cong (), Jing Zhang, Huifang Li, Taoyang Zhang, Dongmei Hu (), Zhenzhong Yong, Qingwen Li, Zhen Wang and Zhigang Zhao ()
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Min Li: University of Science and Technology of China
Yaowu Li: University of Science and Technology of China
Shan Cong: University of Science and Technology of China
Jing Zhang: Chinese Academy of Sciences
Huifang Li: Chinese Academy of Sciences
Taoyang Zhang: University of Science and Technology of China
Dongmei Hu: Chinese Academy of Sciences
Zhenzhong Yong: Jiangxi Institute of Nanotechnology
Qingwen Li: Chinese Academy of Sciences
Zhen Wang: Hainan University
Zhigang Zhao: University of Science and Technology of China

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract Spectral decoupling concerns about selective modulation of specific regions over the wide electromagnetic spectrum, which is highly desirable for smart handling of light/heat, such as photo-thermal regulation, multiband camouflage, etc. However, effective spectral decoupling is still lacking, especially for independent control over non-adjacent bands with orders of discrepancy in wavelengths, e.g., visible and longwave infrared (LWIR). Herein, we demonstrate spectral decoupling regulator (SDR) based on a bilayer electro-optical resonator, which can be electrochemically reconstructed by targeted ion migration into the dielectric and reflective layers, respectively. The SDR is featured by switchable color presentation and wide-range LWIR regulation (with a ΔεLWIR of 0.57), consequently realizing a free re-combination between visible color and LWIR emissivity within single surface. The results demonstrate potentials for in-demand multispectral applications such as optical skin with visible/thermal modulation and encryption encoding information at different wavelengths.

Date: 2025
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DOI: 10.1038/s41467-025-63734-2

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