An optically transparent sandwich structure for radar-infrared bi-stealth

• Published in: Infrared physics & technology 2020-03, Vol.105, p.103108, Article 103108
• Main Authors: Xu, Cuilian, Wang, Binke, Yan, Mingbao, Pang, Yongqiang, Meng, Yueyu, Wang, Wenjie, Wang, Jiafu, Fan, Qi, Qu, Shaobo
• Format: Article
• Language: English
• Subjects: Metasurface; Optically transparent; Radar-infrared bi-stealth
• ISSN: 1350-4495; 1879-0275
• DOI: 10.1016/j.infrared.2019.103108

•An optically transparent metasurface with high-efficiency microwave absorption and low IR emission simultaneously was investigated.•The proposed device is an ITO/dielectric/ITO sandwiched structure. It does not require a special low emissivity layer to reduce IR emission.•The effect of sheet resistance to microwave absorbing performance and IR emissivity is also discussed.•The IR response of the sample was analyzed qualitatively. An ultrathin optically transparent metasurface with simultaneous high-efficiency microwave absorptivity and low infrared (IR) emissivity is proposed. The proposed metasurface is an ITO/dielectric/ITO sandwiched structure. By properly tuning the structural parameters and sheet resistance of ITO, a wide microwave absorption band (5.8–8.3 GHz) greater than 90% is achieved. Furthermore, a low IR emissivity of 0.52 was obtained by adjusting the filling ratio of the ITO part. Thus, the proposed metasurface does not require a special low emissivity layer to reduce IR radiation. The perfect consistency between experimental and simulation results demonstrates that the proposal has practical application of multifunctional stealth technology.