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Electromagnetism

Breakthrough in Nanotechnology: Researchers Develop Ultra-Broadband Absorption Coating

Strategic Insights

— 1 min read

Researchers from the University of Electronic Science and Technology of China have made a significant breakthrough in the field of nanotechnology by developing a composite coating that exhibits ultra-broadband absorption across the millimeter-wave (MMW) to terahertz (THz) range. The coating, which is made from a combination of carbonyl iron powder (CIP) microspheres, MXene nanosheets, and epoxy (EP) resin, demonstrates a high level of electromagnetic compatibility and thermal management.

Key Takeaways:

  • The researchers developed a composite coating that achieves ultra-broadband absorption across the MMW (26.5 GHz) to THz (3 THz) range with a thickness of only 1.5 mm.
  • The average reflection loss (ARL) of the coating is as low as -15.36 dB, and it maintains stability at temperatures up to 300 degrees C.
  • The coating exhibits a high thermal decomposition temperature of 439.6 degrees C.
  • The coating can effectively mitigate external electromagnetic interference (EMI) and device heating when applied to electronic components.
  • The researchers' work offers an innovative solution to address both EMI effects and thermal management challenges in high-frequency broadband electromagnetic systems.
  • The study involved a collaboration between researchers from the University of Electronic Science and Technology of China, the National Key Research & Development Program of China, the Open Foundation of China-Belarus Belt and Road Joint Laboratory on Electromagnetic Environment Effect, the Shenzhen Science and Technology Program, and the Postdoctoral Fellowship Program of CPSF.

Statistics:

  • The ultra-broadband absorption range of the coating is from 26.5 GHz to 3 THz.
  • The average reflection loss (ARL) of the coating is -15.36 dB.
  • The coating maintains stability at temperatures up to 300 degrees C.
  • The high thermal decomposition temperature of the coating is 439.6 degrees C.

Sources:

  • Composites Science and Technology, "Multiscale Magnetic-electric Synergy In Cip/mxene/epoxy Nano-micro Composites for Ultra-broadband Absorption and Enhanced Thermal Conductivity", 2025; 271.
  • Journal of Engineering, "Findings from University of Electronic Science and Technology of China in the Area of Nanosheets Reported", NewsRx, October 20, 2025, p 821.

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