首页|Unidirectional propagation of water waves near ancient Luoyang Bridge

Unidirectional propagation of water waves near ancient Luoyang Bridge

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Metasurfaces and metagratings offer new platforms for electromagnetic wave control with significant responses.However,metasurfaces based on abrupt phase change and resonant structures suffer from the drawback of high loss and face challenges when applied in water waves.Therefore,the application of metasurfaces in water wave control is not ideal due to the limi-tations associated with high loss and other challenges.We have discovered that non-resonant metagratings exhibit promising effects in water wave control.Leveraging the similarity between bridges and metagratings,we have successfully developed a water wave metagrating model inspired by the ancient Luoyang Bridge in China.We conduct theoretical calculations and simulations on the metagrating and derive the equivalent anisotropic model of the metagrating.This model provides evidence that the metagrating has the capability to control water waves and achieve unidirectional surface water wave.The accuracy of our theory is strongly supported by the clear observation of the unidirectional propagation phenomenon during simulation and experiments conducted using a reduced version of the metagrating.It is the first time that the unidi-rectional propagation of water waves has been seen in water wave metagrating experiment.Above all,we realize the water wave metagrating experiment for the first time.By combining complex gratings with real bridges,we explore the physics embedded in the ancient building—Luoyang Bridge,which are of great significance for the water wave metagrating design and provide a new method for analyzing the effects of water waves on bridges.At the same time,this discovery also provides a new idea for ocean cargo transportation,ocean garbage cleaning,and the development and protection of ancient bridges.

Luoyang Bridgeunidirectional propagationwater wave metagratingsequivalent anisotropic model

Linkang Han、Qilin Duan、Junliang Duan、Shan Zhu、Shiming Chen、Yuhang Yin、Huanyang Chen

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Shenzhen Research Institute of Xiamen University,Shenzhen 518000,China

Department of Physics,Xiamen University,Xiamen 361005,China

Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education,Xiamen University,Xiamen 361005,China

Shenzhen Science and Technology ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaFundamental Research Funds for the Central Universities

JCYJ2023080709130000112374410920501022023YFA14071002020YFA071010020720220033

2024

10.1007/s11467-024-1411-x

物理学前沿
高等教育出版社

物理学前沿

CSTPCD
影响因子：0.816
ISSN：2095-0462
年,卷(期)：2024.19(3)
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