近日，浙江大学李强团队研究了具有辐射散热的空对地红外伪装。该项研究成果发表在2025年3月26日出版的《光：科学与应用》杂志上。

随着空间探索和开发的发展，必须解决对空间物体，特别是地面红外观测构成的潜在威胁。然而，在极端的太空环境中，实现跨不同波段的红外伪装并同时进行热管理是一项挑战，迄今为止已不再令人担忧。

研究组提出了与辐射散热兼容的空对地红外伪装策略。H、K、中波红外（MWIR）和长波红外（LWIR）波段的伪装是通过多层结构实现的，在甚长波红外（VLWIR）波段具有辐射散热。H/K波段的高吸收率（0.839/0.633）使太阳辐射的反射信号最小化，MWIR/LWIR波段的低发射率（0.132/0.142）抑制了热辐射信号。

此外，VLWIR波段的高发射率（0.798）确保了有效的热管理，导致模拟空间环境中金属参考温度下降39.8°C（热输入为1200 W m⁻²）。这项工作激发了极端环境中复杂的光谱操纵，并指导了空间物体伪装和辐射散热技术的发展。

附：英文原文

Title: Space-to-ground infrared camouflage with radiative heat dissipation

Author: Qin, Bing, Zhu, Huanzheng, Zhu, Rongxuan, Zhao, Meng, Qiu, Min, Li, Qiang

Issue&Volume: 2025-03-26

Abstract: With the development of space exploration and exploitation, it is imperative to address the potential threats posed to space objects, particularly ground-based infrared observation. However, in the extreme space environment, achieving infrared camouflage across different bands with simultaneous thermal management is challenging and has so far slipped out of concern. Here, we propose the space-to-ground infrared camouflage strategy, compatible with radiative heat dissipation. Camouflage in the H, K, mid-wave-infrared (MWIR), and long-wave-infrared (LWIR) bands is achieved through a multilayer structure, with radiative heat dissipation in the very-long-wave-infrared (VLWIR) band. High absorptivity (0.839/0.633) in the H/K bands minimizes the reflected signal of solar radiation and low emissivity (0.132/0.142) in the MWIR/LWIR bands suppresses the thermal radiation signal. Additionally, high emissivity (0.798) in the VLWIR band ensures efficient thermal management, resulting in a temperature decrement of 39.8°C to the metal reference in the simulated space environment (with 1200Wm2 thermal input). This work inspires sophisticated spectral manipulation in extreme environments and guides the development of camouflage and radiative heat dissipation techniques for space objects.

DOI: 10.1038/s41377-025-01824-y

Source: https://www.nature.com/articles/s41377-025-01824-y