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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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.

Small (Weinheim an Der Bergstrasse, Germany)

|August 29, 2025

Summary

This summary is machine-generated.

A new Fe3SnC/Sn/CNF composite and its polyurea coating offer superior microwave absorption. This advanced material effectively mitigates electromagnetic microwave pollution with excellent stealth capabilities.

Keywords:

electrospinning microwave absorption polyurea radar stealth performance

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Published on: February 12, 2019

Area of Science:

Materials Science
Electromagnetics
Nanotechnology

Background:

Electromagnetic microwave (EMW) pollution necessitates advanced absorbing materials.
Lightweight, broadband, and high-performance materials are crucial for effective EMW mitigation.

Purpose of the Study:

To develop a novel Fe3SnC/Sn/CNF composite for enhanced microwave absorption.
To create a durable and high-performance microwave absorbing coating by incorporating the composite into a polyurea matrix.

Main Methods:

Hydrothermal synthesis, electrospinning, and high-temperature carbonization were used to create the Fe3SnC/Sn/CNF composite.
The composite was then integrated into a polyurea matrix to form a composite coating.
Microwave absorption performance, impedance matching, and Radar Cross Section (RCS) reduction were evaluated.

Main Results:

The optimal Fe3SnC/Sn/CNF composite (FSC3) showed a minimum reflection loss (RLmin) of -28.33 dB and an effective absorption bandwidth (EAB) of 6.40 GHz.
The polyurea composite coating achieved an RLmin of -65.78 dB and an EAB of 6.68 GHz at a reduced thickness.
CST simulations confirmed excellent RCS reduction, and the coating exhibited improved mechanical strength and hydrophilicity.

Conclusions:

The synergistic effect between the Fe3SnC/Sn/CNF filler and the polyurea matrix significantly enhances microwave absorption properties.
The developed composite coating demonstrates potential for stealth applications and durability in harsh environments.
This work offers a scalable strategy for designing multifunctional microwave absorbing coatings.