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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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A review on polyimide-based structures for regulating the electromagnetic absorption and reflection.

Zongtao Li^1,2, Zhaoshu Cai¹, Chaofan Qu¹

¹National & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices, South China University of Technology, Guangdong, 510640, China. jiasli@scut.edu.cn.

|October 31, 2025

Summary

This summary is machine-generated.

This review summarizes polyimide-based composites for aerospace electromagnetic shielding and stealth applications. Innovative designs and filler combinations enhance performance, offering solutions for advanced defense technologies.

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Area of Science:

Materials Science
Aerospace Engineering
Electromagnetics

Background:

Aerospace systems require materials with stable electromagnetic shielding.
Polyimide composites with conductive/magnetic fillers are a hotspot for electromagnetic shielding and stealth.
Existing research lacks a systematic summary of polyimide-based shielding materials.

Purpose of the Study:

To systematically review polyimide-based composite materials for electromagnetic shielding and stealth.
To summarize electromagnetic shielding mechanisms and performance indicators.
To explore design and preparation strategies for enhanced performance.

Main Methods:

Review of literature on polyimide-based electromagnetic shielding and stealth composites.
Analysis of electromagnetic shielding mechanisms (reflection, absorption, multiple reflection).
Focus on structural designs (films, foams, fabrics) and filler collaborations (carbon-based, metal nanoparticles, hybrid).

Main Results:

Polyimide composites with tailored structures and fillers demonstrate enhanced electromagnetic shielding and stealth.
Collaborative design of fillers and innovative architectures (sandwich, multilayered, Janus) improve impedance matching and electromagnetic propagation.
Breakthrough enhancements in shielding and stealth performance have been achieved.

Conclusions:

Polyimide-based composites are promising for aerospace electromagnetic shielding and stealth applications.
Controlling interfacial impedance matching and electromagnetic propagation is key to performance enhancement.
Future research should focus on broadband electromagnetic absorption for advanced stealth technologies.