journal article·2025-05Open access

Broadband, Wide‐Angle, and Versatile Metasurface Illusions with Inverse Synthetic Aperture Radar Imaging

Haoran Li, Kang Luo, Din Ping Tsai, Yulang Li, Linyuan Dou, Shuqiao Li, Tao He, Yuancheng Fan, Mu Ku Chen, Zhanshan Wang, Yuzhi Shi, Zeyong Wei, Xinbin Cheng

Advanced Science· Volume 12· Issue 18

Abstract

Abstract Generation of controllable illusions has raised widespread interest. Over the past few decades, this field has been revolutionized by the emergence of metamaterials and metasurfaces. However, current efforts utilizing single‐layer metasurfaces are limited to simple illusion demonstrations by reproducing electromagnetic field distributions, which also struggle to achieve both broad bandwidths and wide angular ranges. Here, a nontrivial multi‐layer illusion strategy is proposed utilizing the inverse synthetic aperture radar imaging. The customization of illusions is facilitated by correlating the phase dispersion of meta‐atoms within the target frequency interval with the positioning of the structure. The approach enables the creation of illusions across a broadband of 8 to 12 GHz and a wide angular range from −30° to 30°. As a proof of principle, several illusions are experimentally demonstrated, showcasing the diversity of the approach. This work presents a viable illusion strategy that is more feasible for practical applications in the microwave domain, paving the way for future advances of customizable illusions.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Antenna Design and Analysis · Advanced Antenna and Metasurface Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Precision Optical Engineering School of Physics Science and Engineering Tongji University Shanghai 200092 China

MOE Key Laboratory of Advanced Micro‐Structured Materials Shanghai 200092 China

Shanghai Institute of Intelligent Science and Technology Tongji University Shanghai 200092 China

Shanghai Frontiers Science Center of Digital Optics Shanghai 200092 China

National Key Laboratory of Electromagnetic Energy Naval University of Engineering Wuhan 430033 China

Department of Electrical Engineering City University of Hong Kong Kowloon Hong Kong 999077 China

State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong Kowloon Hong Kong 999077 China

Centre for Biosystems, Neuroscience, and Nanotechnology City University of Hong Kong Kowloon Hong Kong 999077 China

MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 China

Funding

National Key Research and Development Program of China · Science and Technology Commission of Shanghai Municipality · Special Funds for the Basic Research and Development Program in the Central Non-profit Research Institutesof China · Major Projects of Special Development Funds in Zhangjiang National Independent Innovation Demonstration Zone, Shanghai · National Natural Science Foundation of China

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