Deterministic Approach to Achieve Full-Polarization Cloak
| Autor: | Shaojie Wang, Xiaohui Ling, Xiao-Kuan Zhang, He-Xiu Xu, Fei Ding, Mingzhao Wang, Chaohui Wang, Yongjun Huang, Yanzhao Wang, Wei Huang, Haiwen Liu |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Wavefront Multidisciplinary Invisibility business.industry Science Bandwidth (signal processing) Cloak Phase (waves) Cloaking 02 engineering and technology 021001 nanoscience & nanotechnology Polarization (waves) 01 natural sciences 010309 optics Superposition principle Optics 0103 physical sciences 0210 nano-technology business Research Article |
| Zdroj: | Research, Vol 2021 (2021) Research Xu, H X, Wang, Y, Wang, C, Wang, M, Wang, S, Ding, F, Huang, Y, Zhang, X, Liu, H, Ling, X & Huang, W 2021, ' Deterministic approach to achieve full-polarization cloak ', Research, vol. 2021, 6382172 . https://doi.org/10.34133/2021/6382172 |
| ISSN: | 2639-5274 |
| Popis: | Achieving full-polarization ( σ ) invisibility on an arbitrary three-dimensional (3D) platform is a long-held knotty issue yet extremely promising in real-world stealth applications. However, state-of-the-art invisibility cloaks typically work under a specific polarization because the anisotropy and orientation-selective resonant nature of artificial materials made the σ -immune operation elusive and terribly challenging. Here, we report a deterministic approach to engineer a metasurface skin cloak working under an arbitrary polarization state by theoretically synergizing two cloaking phase patterns required, respectively, at spin-up ( σ + ) and spin-down ( σ − ) states. Therein, the wavefront of any light impinging on the cloak can be well preserved since it is a superposition of σ + and σ − wave. To demonstrate the effectiveness and applicability, several proof-of-concept metasurface cloaks are designed to wrap over a 3D triangle platform at microwave frequency. Results show that our cloaks are essentially capable of restoring the amplitude and phase of reflected beams as if light was incident on a flat mirror or an arbitrarily predesigned shape under full polarization states with a desirable bandwidth of ~17.9%, conceiving or deceiving an arbitrary object placed inside. Our approach, deterministic and robust in terms of accurate theoretical design, reconciles the milestone dilemma in stealth discipline and opens up an avenue for the extreme capability of ultrathin 3D cloaking of an arbitrary shape, paving up the road for real-world applications. |
| Databáze: | OpenAIRE |
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