Multi-band middle-infrared-compatible camouflage with thermal management via simple photonic structures

By Meiyan Pan, Huang Yun, Qiang Li, Hao Luo, Huanzheng Zhu, S. Kaur, M. Qiu. 2020

276 citations recorded by the source corpus.

Abstract Perpetual advancements in modern detection technologies have augmented the need of multi-band (such as laser radar, visual) middle-infrared (MIR) compatible camouflage; however, its development is impeded by incompatible structural requirements of different camouflage effects and thermal challenge. This study demonstrates two simple photonic structures (Designs I and II) for visual and MIR camouflage with thermal management utilizing thin-film interference. The additional laser camouflage is realized by further incorporating simple wavelength-scale grating structures in Design I (Design II). The fabricated structures exhibit dual-band MIR camouflage by low emission ( e ‾ 3–5μm = 0.25 and e ‾ 8–14μm = 0.33), radar camouflage to CO2 laser by high absorption at 10.6 μm (α10.6 μm = 0.90), visual camouflage by structural colors and thermal management by high emission in 5–8 μm band ( e ‾ 5–8μm = 0.77). This study provides a guideline on coordinated control of electromagnetic wave and heat through simple structural design, thus has broad implications in energy harvesting and thermal information processing.

Subfields: Atomic and Molecular Physics, and Optics, Civil and Structural Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/fad723bf93734fb695896fc22ef203a4484e17ca