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Updated: Jul 8, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Polyurea-Integrated Fe3SnC/Sn/CNF Hybrid for Enhanced Broadband Microwave Absorption
Jiao Liu1, Shuhan Xu1, Xukang Han1
1School of Civil Engineering, Qingdao University of Technology, Qingdao, 266520, P. R. China.
None:
Effective mitigation of electromagnetic microwave (EMW) pollution requires the development of lightweight, broadband, and high-performance microwave absorbing materials. In this work, a novel Fe3SnC/Sn/CNF composite is synthesized via a combination of hydrothermal synthesis, electrospinning, and high-temperature carbonization. The optimal sample (FSC3) achieved a minimum reflection loss (RLmin) of -28.33 dB and an effective absorption bandwidth (EAB) of 6.40 GHz at a thickness of 2.50 mm. To enhance environmental durability and broaden application potential, FSC3 is incorporated into a polyurea (PUA) matrix to fabricate a composite coating. The resulting material exhibited significantly improved microwave absorption, with an RLmin of -65.78 dB and an EAB of 6.68 GHz at only 2.17 mm thickness. This enhancement is attributed to increased interfacial and dipolar polarization, as well as improved impedance matching due to the synergy between the filler and the elastomer matrix. Computer Simulation Technology (CST) simulations confirmed excellent Radar Cross Section (RCS) reduction performance, validating its stealth potential. Furthermore, the composite coating displayed enhanced mechanical strength and a hydrophilic surface, broadening its application prospects in harsh environments. This work presents a scalable and versatile strategy for designing multifunctional microwave absorbing coatings with outstanding performance.
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