Lei Wang1,2,3, Cuilian Xu1,2,3,4,*, Jinming Jiang1,2,3, Mingbao Yan1,2,3..., Zuntian Chu1,2,3, Huiting Sun1,2,3, Jun Wang1,2,3, Sai Sui1,2,3, Jiafu Wang1,2,3,5,*, Qi Fan1,2,3,6,* and Yajuan Han1,2,3|Show fewer author(s)
Author Affiliations
1Air Force Engineering University, Department of Basic Sciences, Xi’an 710051, China2Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices, Air Force Engineering University, Xi’an 710051, China3Suzhou Laboratory, Suzhou 215000, China4e-mail: xucuilian2001@163.com5e-mail: wangjiafu1981@128.com6e-mail: af-fanqi@163.comshow less
DOI: 10.1364/PRJ.534513
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Lei Wang, Cuilian Xu, Jinming Jiang, Mingbao Yan, Zuntian Chu, Huiting Sun, Jun Wang, Sai Sui, Jiafu Wang, Qi Fan, Yajuan Han, "Bispectral camouflage metasurfaces compatible with microwave diffuse emission and tunable infrared emissivity," Photonics Res. 13, 249 (2025)
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Abstract
With the rapid development of detection technology and artificial intelligence, the widespread use of multispectral detectors has increased challenges to stealth capabilities. This paper presents a bispectral camouflage metasurface with microwave diffuse emission and tunable infrared (IR) emissivity, achieving an integrated design for radar cross-section (RCS) reduction and tunable IR emissivity. The structure consists of layers from bottom to top: aerogel felt, indium-tin-oxide (ITO), air, polyethylene terephthalate (PET), and ITO. It reduces RCS through microwave diffuse reflection and adjusts IR emissivity by controlling the ITO fill ratio. Both simulations and experiments demonstrate effective suppression of electromagnetic (EM) wave backscattering within 4.5–10.3 GHz, achieving radar invisibility. The tunable IR emissivity ranges from 0.2 to 0.7 with good thermal insulation. This design alleviates issues related to structural thickness and processing complexity and avoids increased thermal load from microwave absorption, offering better tunable IR emissivity for various thermal camouflage environments. This metasurface holds significant promise for multispectral stealth and IR camouflage applications.
