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22 March 2021 Broadband acoustic carpet cloak with dynamic or static metasurface
Hong-Tao Zhou, Wen-Xiao Fu, Yan-Feng Wang, Yue-Sheng Wang
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Proceedings Volume 11593, Health Monitoring of Structural and Biological Systems XV; 115931V (2021) https://doi.org/10.1117/12.2583943
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only
Abstract
Acoustic metasurface carpet cloak has suffered from narrowband limitation due to highly frequency-dependent phase response. Here, we adopt two entirely different ways to broaden the working frequency range of the carpet cloak with dynamic or static metasurface structure. Numerical simulations and experimental measurements demonstrate that the designed dynamic or static metasurface carpet cloak can both exhibit a broadband stealth performance. The proposed design strategy is expected to break the narrowband limitation of metasurfaces, making a significant difference to the practical applications of the broadband acoustic devices.
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Hong-Tao Zhou, Wen-Xiao Fu, Yan-Feng Wang, and Yue-Sheng Wang "Broadband acoustic carpet cloak with dynamic or static metasurface", Proc. SPIE 11593, Health Monitoring of Structural and Biological Systems XV, 115931V (22 March 2021); https://doi.org/10.1117/12.2583943
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KEYWORDS
Acoustics
Numerical simulations
Target acquisition
Wave propagation
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