Abstract
In an ideal platform for camouflage compatible cooling, the thermal emitter should be a spectrally selective antenna to radiate its heat buildup without being detected by thermal cameras. Moreover, to keep its visual appearance and to minimize solar induced heating, the structure should be visibly transparent. In this Letter, to achieve the visually invisible mid-infrared (MIR) camouflage-cooling feature, a metasurface design based on an indium-doped tin oxide (ITO)-hexagonal boron nitride (hBN) heterostructure is proposed. The proposed ITO-hBN nanoantenna shows spectrally selective broadband absorptions in near-infrared (NIR) and non-transmissive (MIR) windows, while it is dominantly non-emissive in other ranges. The camouflage ability of the structure in the targeted wavelengths is demonstrated using power calculations.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Ebru Buhara, Amir Ghobadi, and Ekmel Ozbay
Opt. Lett. 46(19) 4777-4780 (2021)
Lei Wang, Yue Yang, Xianglin Tang, Bin Li, Yizhi Hu, Yonggang Zhu, and Huizhu Yang
Opt. Lett. 46(20) 5224-5227 (2021)
Li Wang, Jinlai Liu, Bin Ren, Jie Song, and Yongyuan Jiang
Opt. Express 29(2) 2288-2298 (2021)