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- Title
Infrared Camouflage Utilizing Ultrathin Flexible Large‐Scale High‐Temperature‐Tolerant Lambertian Surfaces.
- Authors
Huang, Yun; Ma, Binze; Pattanayak, Arnab; Kaur, Sandeep; Qiu, Min; Li, Qiang
- Abstract
The development of ultrathin, flexible, large‐scale, high‐temperature‐tolerant infrared camouflage devices, which are immune to the external environment, has emerged as an important unsolved challenge. This paper proposes an infrared camouflage device based on the Lambertian surface. The proposed device simultaneously exhibits low emissivity (≈0.1), low specular reflectance (≈0.05), and high temperature (290 °C) tolerance over a broad infrared range (0.75–25 µm). Furthermore, the proposed device is ultrathin (≈50 µm), highly flexible, scalable, and can be fabricated at a low cost. The experimental results show that while camouflaging a target (at 65 °C), the proposed Lambertian surface can reduce the peak value of the target‐background contrast by 68.4% (indoor case) and 76.0% (outdoor case) compared to the conventional low‐e (low‐emissivity) smooth surface. The calculated detection range of the proposed low‐e Lambertian surface is 60% less than that of both the low‐e smooth surface and the blackbody. This work proposes a novel method to simultaneously control the radiation and the reflection, thereby introducing a new design paradigm for modern camouflage technology and energy harvesting applications.
- Subjects
INFRARED equipment; ENERGY harvesting; EMISSIVITY; HIGH temperatures; REFLECTANCE
- Publication
Laser & Photonics Reviews, 2021, Vol 15, Issue 9, p1
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.202000391