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Multiband Electromagnetic Interference Shielding Composite with Dynamic Thermal Management and Passive Infrared
Jie Mei1, Huimin Liao1, Siqi Yang1
1Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China.
ACS Applied Materials & Interfaces
|July 21, 2025
Summary
This study introduces a novel composite material for advanced military protection, offering exceptional electromagnetic interference shielding and effective infrared stealth capabilities. The material ensures stable temperature regulation and adaptive camouflage in diverse environmental conditions.
Area of Science:
- Materials Science and Engineering
- Electromagnetics and Photonics
- Military Technology
Background:
- Modern military operations require materials with both electromagnetic interference (EMI) shielding and infrared stealth properties.
- Existing passive infrared stealth methods struggle with stable temperature regulation in complex environments, leading to thermal contrast-based detection.
- There is a critical need for integrated solutions providing all-weather electromagnetic and infrared protection for military equipment.
Purpose of the Study:
- To develop an innovative composite material for integrated multiband electromagnetic protection and infrared stealth.
- To achieve stable temperature regulation and adaptive infrared camouflage for military applications.
- To overcome the limitations of traditional passive infrared stealth strategies.
Main Methods:
- Fabrication of a novel PF@Ag-MF@Ag-x composite using an electroless plating process.
- Construction of a continuous conductive network via silver layer growth on a three-dimensional framework.
- Characterization of broadband electromagnetic interference shielding effectiveness and infrared stealth properties.
Main Results:
- Achieved exceptional broadband EMI shielding effectiveness of 92.3 dB (X band) and 90.1 dB (Ku band).
- Demonstrated efficient passive infrared stealth through a hierarchical pore structure and low infrared emissivity, suppressing heat conduction and radiation.
- Enabled active temperature modulation for adaptive infrared camouflage via dual-mode electrothermal conversion and plasmon resonance effects.
Conclusions:
- The developed PF@Ag-MF@Ag-x composite successfully integrates multiband electromagnetic protection with active-passive infrared stealth.
- This innovative material provides a robust solution for all-weather electromagnetic/infrared integrated protection in military equipment.
- The composite's unique structure and properties offer enhanced survivability and operational effectiveness in diverse combat scenarios.
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