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<p>High-temperature stealth is vital for enhancing the concealment, survivability, and longevity of critical assets. However, achieving stealth across multiple infrared bands—particularly in the short-wave infrared (SWIR) band—along with microwave stealth and efficient thermal management at high temperatures, remains a significant challenge. Here, we propose a strategy that integrates an IR-selective emitter (Mo/Si multilayer films) and a microwave metasurface (TiB<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>–TiB<sub>2</sub>) to enable multi-infrared band stealth, encompassing mid-wave infrared (MWIR), long-wave infrared (LWIR), and SWIR bands, and microwave (X-band) stealth at 700&#xa0;°C, with simultaneous radiative cooling in non-atmospheric window (5–8&#xa0;μm). At 700&#xa0;°C, the device exhibits low emissivity of 0.38/0.44/0.60 in the MWIR/LWIR/SWIR bands, reflection loss below −&#xa0;3&#xa0;dB in the X-band (9.6–12&#xa0;GHz), and high emissivity of 0.82 in 5–8&#xa0;μm range—corresponding to a cooling power of 9.57&#xa0;kW&#xa0;m<sup>−2</sup>. Moreover, under an input power of 17.3&#xa0;kW&#xa0;m<sup>−2</sup>—equivalent to the aerodynamic heating at Mach 2.2—the device demonstrates a temperature reduction of 72.4&#xa0;°C compared to a conventional low-emissivity molybdenum surface at high temperatures. This work provides comprehensive guidance on high-temperature stealth design, with far-reaching implications for multispectral information processing and thermal management in extreme high-temperature environments.</p>

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High-Temperature Stealth Across Multi-Infrared and Microwave Bands with Efficient Radiative Thermal Management

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月24日

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  • Meng Zhao,
  • Huanzheng Zhu,
  • Bing Qin,
  • Rongxuan Zhu,
  • Jihao Zhang,
  • Pintu Ghosh,
  • Zuojia Wang,
  • Min Qiu,
  • Qiang Li

摘要

High-temperature stealth is vital for enhancing the concealment, survivability, and longevity of critical assets. However, achieving stealth across multiple infrared bands—particularly in the short-wave infrared (SWIR) band—along with microwave stealth and efficient thermal management at high temperatures, remains a significant challenge. Here, we propose a strategy that integrates an IR-selective emitter (Mo/Si multilayer films) and a microwave metasurface (TiB2–Al2O3–TiB2) to enable multi-infrared band stealth, encompassing mid-wave infrared (MWIR), long-wave infrared (LWIR), and SWIR bands, and microwave (X-band) stealth at 700 °C, with simultaneous radiative cooling in non-atmospheric window (5–8 μm). At 700 °C, the device exhibits low emissivity of 0.38/0.44/0.60 in the MWIR/LWIR/SWIR bands, reflection loss below − 3 dB in the X-band (9.6–12 GHz), and high emissivity of 0.82 in 5–8 μm range—corresponding to a cooling power of 9.57 kW m−2. Moreover, under an input power of 17.3 kW m−2—equivalent to the aerodynamic heating at Mach 2.2—the device demonstrates a temperature reduction of 72.4 °C compared to a conventional low-emissivity molybdenum surface at high temperatures. This work provides comprehensive guidance on high-temperature stealth design, with far-reaching implications for multispectral information processing and thermal management in extreme high-temperature environments.