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Electromagnetism

Breakthrough in Nanotechnology: Researchers Develop Dual-Functional Nanowires for Enhanced Microwave Absorption and Mechanical Strength

Strategic Insights

— 1 min read

Researchers at the Harbin Institute of Technology at Weihai have made a significant discovery in the field of nanotechnology, developing a novel three-layer structure nanowire that can absorb microwaves and improve the mechanical strength of materials. According to a study published in the Chemical Engineering Journal, the researchers created SiAlON/C nanowires with an outer carbon coating, a middle SiC layer, and an inner SiAlON core. This unique design enables the nanowires to absorb microwaves with a peak performance of -56.87 dB at 13.04 GHz, while also increasing the polymer composite's fracture toughness by 85.9% when added in small quantities.

Key Takeaways:

  • The researchers developed a novel three-layer structure nanowire that can absorb microwaves and improve the mechanical strength of materials.
  • The SiAlON/C nanowires exhibit outstanding microwave absorption, reaching a peak performance of -56.87 dB at 13.04 GHz.
  • The addition of 10% nanowires increases the polymer composite's fracture toughness by 85.9% while keeping mechanical strength under stress.
  • The triple-layer design shows promise for aerospace systems and smart buildings needing both signal absorption and structural durability.
  • The research has been peer-reviewed and published in the Chemical Engineering Journal.
  • The study's lead researcher, Xinyu Wang, is from the School of Materials Science and Engineering at the Harbin Institute of Technology at Weihai.
  • The research is supported by the National Natural Science Foundation of China, Heilongjiang Touyan Team Program, and Fundamental Research Funds for the Central Universities.

Statistics:

  • Peak microwave absorption performance: -56.87 dB at 13.04 GHz
  • Fracture toughness improvement: 85.9%
  • Mechanical strength under stress: [no specific number provided]
  • Frequencies: 13.04 GHz
  • Research duration: [no specific information provided]
  • Researchers involved: Xinyu Wang, Ran Wang, Jingwen Qi, Xueting Zhang, Yangkun Wang, Jiahao Qiu, Zihan Zhao, Yihan Chen, Pianpian Zhang, Yanan Yang, and Long Xia

Sources:

  • NewsRx. Research Conducted at School of Materials Science and Engineering Has Updated Our Knowledge about Nanowires (A Gradient Carbide-coated Sialon Nanowire for Synergistic Microwave Absorption and Toughening Enhancement). Electronics Newsweekly. October 21, 2025; p 1541.
  • A Gradient Carbide-coated Sialon Nanowire for Synergistic Microwave Absorption and Toughening Enhancement. Chemical Engineering Journal, 2025;522.

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