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A Dynamic Thermal Camouflage Metadevice with Microwave Scattering Reduction
Liming Yuan1, Cheng Huang1,2, Jianming Liao1,2
1State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China.
Summary
This study introduces a new multispectral metadevice for advanced camouflage. It effectively reduces microwave scattering and provides dynamic infrared (IR) camouflage by controlling thermal signatures, enhancing stealth capabilities.
Area of Science:
- Metamaterials and Nanophotonics
- Electromagnetics and Optics
- Thermal Engineering
Background:
- Growing need for advanced camouflage solutions compatible with both microwave and infrared (IR) surveillance technologies.
- Limitations of existing materials in providing simultaneous microwave stealth and dynamic IR adaptability.
Purpose of the Study:
- To propose and demonstrate a novel multispectral metadevice for integrated microwave and IR camouflage.
- To achieve simultaneous microwave scattering reduction, dynamic IR camouflage, and low IR reflection.
Main Methods:
- Construction of a metadevice using coded thermoelectric elements with specific phase arrangements.
- Utilizing thermoelectric cooling/heating effects and high IR absorptivity for thermal management.
- Experimental validation of microwave scattering reduction and IR camouflage capabilities.
Main Results:
- Achieved 10 dB scattering reduction in the 10-16.1 GHz microwave band.
- Demonstrated dynamic surface temperature modulation for IR camouflage, adapting to background variations.
- Exhibited significantly low IR reflection compared to conventional low-emissivity materials.
Conclusions:
- The developed metadevice offers effective microwave-IR compatible camouflage.
- The study provides a pathway for future advancements in multispectral camouflage and stealth technologies.
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