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Article

Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units

by
Panyi Li
1,2,3,
Jiwei Zhao
1,2,3,*,
Caofei Luo
1,4,
Zhicheng Pei
1,5,
Hui Jin
1,
Yitian Huang
1,2,3,
Wei Zhou
1,2,3 and
Bin Zheng
1,2,3,*
1
State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, China
2
International Joint Innovation Center, The Electromagnetics Academy at Zhejiang University, Zhejiang University, Haining 314400, China
3
Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, Jinhua Institute of Zhejiang University, Zhejiang University, Jinhua 321099, China
4
China E-Tech (Ningbo) Maritime Electyonics Research Institute Co., Ltd., Ningbo 315000, China
5
No. 36, Institute of CETC, Jiaxing 314001, China
*
Authors to whom correspondence should be addressed.
Materials 2024, 17(19), 4863; https://doi.org/10.3390/ma17194863
Submission received: 9 September 2024 / Revised: 27 September 2024 / Accepted: 30 September 2024 / Published: 2 October 2024
(This article belongs to the Special Issue Advances in Metamaterials: Structure, Properties and Applications)
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Abstract

Metasurfaces, which are ultrathin planar metamaterials arranged in certain global sequences, interact uniquely with the surrounding light field and exhibit unusual effects of light modulation. Many interesting applications have been discovered based on metasurfaces, particularly in invisibility cloaks. However, most invisibility cloaks are limited to working in specific directions. Achieving effectiveness in multiple directions requires the metasurface to be designed with both perception and modulation capabilities. Current multi-directional metasurface cloak systems are implemented with discrete components rather than an integrated sensing component. Here, we propose an intelligent metasurface cloak system that integrates sensing units, resulting in the cloaking effect with the help of a real-time direction sensor and an adaptive feedback control system. A reconfigurable reflective meta-atom based on phase modulation is presented. Sensing units replace parts of the meta-atoms in the designed tunable metasurface, integrating with an FPGA responsible for measuring the direction and frequency of the incident wave, constituting a closed-loop system together with the feedback parts. Experimental results demonstrate that the metasurface cloak system can recognize the different directions of the incoming wave, and can adaptively manipulate the reflected phase of EM waves to conceal objects without any human participation.
Keywords: adaptive metasurface cloak system; direction recognition; integrated sensing units; phase interferometry adaptive metasurface cloak system; direction recognition; integrated sensing units; phase interferometry

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MDPI and ACS Style

Li, P.; Zhao, J.; Luo, C.; Pei, Z.; Jin, H.; Huang, Y.; Zhou, W.; Zheng, B. Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units. Materials 2024, 17, 4863. https://doi.org/10.3390/ma17194863

AMA Style

Li P, Zhao J, Luo C, Pei Z, Jin H, Huang Y, Zhou W, Zheng B. Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units. Materials. 2024; 17(19):4863. https://doi.org/10.3390/ma17194863

Chicago/Turabian Style

Li, Panyi, Jiwei Zhao, Caofei Luo, Zhicheng Pei, Hui Jin, Yitian Huang, Wei Zhou, and Bin Zheng. 2024. "Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units" Materials 17, no. 19: 4863. https://doi.org/10.3390/ma17194863

APA Style

Li, P., Zhao, J., Luo, C., Pei, Z., Jin, H., Huang, Y., Zhou, W., & Zheng, B. (2024). Self-Adaptive Intelligent Metasurface Cloak System with Integrated Sensing Units. Materials, 17(19), 4863. https://doi.org/10.3390/ma17194863

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