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Fabry-Pérot Matching Lossy Metasurface for Coordinated, Adaptive, and Ultra-Broadband Visible-Infrared-Radar
Junyi Yang1,2, Yuhao Guo1,2, Xinting Li1,2
1Key Laboratory of Scale Manufacturing Technologies for High-Performance MEMS Chips of Zhejiang Province, Key Laboratory of Optical Microsystems and Application Technologies of Ningbo City, Ningbo Institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, China.
This study introduces a novel adaptive camouflage system that combines visible-infrared camouflage with broadband microwave absorption. The technology offers improved environmental adaptability and stealth capabilities for military applications.
Area of Science:
- Materials Science
- Optics
- Electromagnetics
Background:
- Advanced intelligence, surveillance, and reconnaissance (ISR) systems necessitate sophisticated camouflage solutions.
- Existing multispectral camouflage methods face challenges with spectral crosstalk and environmental adaptability.
Purpose of the Study:
- To develop a multispectral camouflage system with adaptive visible-infrared capabilities and ultra-broadband microwave absorption.
- To address limitations of current camouflage technologies in spectral crosstalk and environmental matching.
Main Methods:
- A Fabry-Pérot (F-P) matching lossy metasurface integrated with a reconfigurable camouflage pixel layer (CPL) was designed.
- The CPL adaptively matches visible and infrared signatures to various environments (woodland, oceanic, mountain).
- An indium tin oxide/composite absorber was coupled with the F-P cavity for microwave absorption.
Main Results:
- The system achieved precise infrared signature modulation, maintaining thermal contrasts below 3.2 °C.
- Demonstrated ultra-broadband microwave absorption from 5.7 to 73.2 GHz, covering six radar bands.
- The camouflage exhibited flexibility, polarization insensitivity, and angular stability across visible, infrared, and microwave spectra.
Conclusions:
- The developed Fabry-Pérot metasurface provides effective adaptive multispectral camouflage.
- The technology shows significant potential for portable, field-deployable applications on ground platforms like armored vehicles.
