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<p>The development of advanced multispectral stealth technology plays a vital role in enhancing the survivability of combat platforms. In this paper, a novel design of metamaterial structure based on laser-induced graphene (LIG) that enables bi-stealth compatibility in both infrared and radar regions is proposed and experimentally validated. The structure features a layered design, consisting of an infrared shielding layer (IRSL) and a radar absorption layer (RAL). Specifically, the IRSL layer is structured as an array of Indium Tin Oxide (ITO) based square patches, provides low infrared emissivity and high microwave transparency. While, the RAL is fabricated using LIG technology. which provides excellent radar-absorbing properties through its porous, conductive, and tunable electromagnetic characteristics. The proposed design demonstrates exceptional broadband absorption performance, with an absorption rate exceeding 90% in a range of 2.42 ~ 16.2&#xa0;GHz, and a relative absorption bandwidth of 148%, which aligns well with simulated results. Additionally, the structure with a low infrared emissivity of 0.26 in the infrared range from 8 to 14&#xa0;μm. By integrating an LIG-based RAL with a low-emissivity IRSL, this design overcomes the limitations of traditional single-mechanism approaches to multispectral detection, offering new perspectives for the further development of multispectral stealth technology.</p>

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Broadband radar-infrared stealth metamaterial absorber based on laser-induced graphene

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年8月3日

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  • Xubo He,
  • Huiyu Wen,
  • Chaoyue Li,
  • Pingping Min,
  • Zhibo Zhang,
  • Yang Zhang,
  • Chi Zhang,
  • Hongxing Dong,
  • Long Zhang

摘要

The development of advanced multispectral stealth technology plays a vital role in enhancing the survivability of combat platforms. In this paper, a novel design of metamaterial structure based on laser-induced graphene (LIG) that enables bi-stealth compatibility in both infrared and radar regions is proposed and experimentally validated. The structure features a layered design, consisting of an infrared shielding layer (IRSL) and a radar absorption layer (RAL). Specifically, the IRSL layer is structured as an array of Indium Tin Oxide (ITO) based square patches, provides low infrared emissivity and high microwave transparency. While, the RAL is fabricated using LIG technology. which provides excellent radar-absorbing properties through its porous, conductive, and tunable electromagnetic characteristics. The proposed design demonstrates exceptional broadband absorption performance, with an absorption rate exceeding 90% in a range of 2.42 ~ 16.2 GHz, and a relative absorption bandwidth of 148%, which aligns well with simulated results. Additionally, the structure with a low infrared emissivity of 0.26 in the infrared range from 8 to 14 μm. By integrating an LIG-based RAL with a low-emissivity IRSL, this design overcomes the limitations of traditional single-mechanism approaches to multispectral detection, offering new perspectives for the further development of multispectral stealth technology.