Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 °C

Xinyuan Lv, Qiujin Gu, Shengchi Zhu, Xun Sun, Minglong Yang, Tao Liu, Yunpeng Ma (), Zhenxin Cao () and Haitao Liu ()
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Xinyuan Lv: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering
Qiujin Gu: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering
Shengchi Zhu: Southeast University, State Key Laboratory of Millimeter Waves
Xun Sun: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering
Minglong Yang: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering
Tao Liu: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering
Yunpeng Ma: BeiHang University, School of Aeronautical Science and Engineering
Zhenxin Cao: Southeast University, State Key Laboratory of Millimeter Waves
Haitao Liu: National University of Defense Technology, Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract The metamaterials offer methodology and infinite possibilities for ultra-broadband microwave absorption (MA). However, maintaining stable broadband MA under extreme high-temperature environments remains one of the most cutting-edge challenges. Herein, we report a RuO2/glass resistive material for the fabrication of microwave-absorbing metasurfaces. Based on tunneling effect, an ultra-low temperature coefficient of resistance was achieved in RuO2/glass, resulting in temperature-insensitivity of its electrical properties, thereby ensuring stability of MA properties of metasurfaces against temperature. Furthermore, using low-dielectric alumina aerogel composites and Al2O3f/Al2O3 ceramic composites as dielectric spacer layer, we propose the multifunctional composites integrated with MA, thermal insulation and load-bearing (MTL). The MTL integrated composites show an impressive broadband (2~12 GHz) MA performance that is ultra-robust against temperature variations (25~1000 °C), thermal shock (50 cycles at 25~1000 °C), incidence angle (±45°) and polarization. Additionally, the integrated composites also demonstrate a long-term thermal insulation ability and a high compressive modulus (6.58 MPa). This advancement provides insights for developing MA materials that can work in extreme multi-field environments.

Date: 2025
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DOI: 10.1038/s41467-025-66317-3

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