Light-manipulated phase change materials for multi-functional thermal camouflage

Xinpeng Jiang; Qing Luo; Huan Yuan; Tao Liang; Junbo Yang

doi:10.1117/12.2691799

6 November 2023 Light-manipulated phase change materials for multi-functional thermal camouflage

Xinpeng Jiang, Qing Luo, Huan Yuan, Tao Liang, Junbo Yang

Proceedings Volume 12921, Third International Computing Imaging Conference (CITA 2023); 129214F (2023) https://doi.org/10.1117/12.2691799
Event: Third International Computing Imaging Conference (CITA 2023), 2023, Sydney, Australia

Abstract

Adaptive thermal camouflage which is bioinspired and used to avoid infrared detection plays a crucial role in the military field. However, compared with mature infrared detection methods, it still has challenges to achieve adaptive thermal camouflage and imaging manipulation of object. In this paper, we experimentally demonstrate a 440-nm-thick Ge₂Sb₂Te₅ (GST) metamaterial with continuous changed average emissivity from 15% to 66% in the wavelength range of 7.5–14 μm. The precise (⪆10 states) and fast (⪅10 ms) manipulation for phase-change character of GST is achieved by laser irradiation. Combining Emissivity Engineering (EE) and Phase Change Materials (PCMs), the proposed metamaterial can be employed to multi-functional thermal camouflage device, which can simultaneously realize some functions including adaptive thermal camouflage, illusion and messaging without changing the structural parameters. The proposed PCM-based thermal camouflage metamaterials have promising potentials for applications in the field of multi-functional thermal camouflage, thermal imaging and thermal management.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinpeng Jiang, Qing Luo, Huan Yuan, Tao Liang, and Junbo Yang "Light-manipulated phase change materials for multi-functional thermal camouflage", Proc. SPIE 12921, Third International Computing Imaging Conference (CITA 2023), 129214F (6 November 2023); https://doi.org/10.1117/12.2691799

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