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Concentrators for Water Waves

Chunyang Li1,2, Lin Xu1,2,4, Lili Zhu2, Siyuan Zou2, Qing Huo Liu3, Zhenyu Wang2,*, and Huanyang Chen1,†

  • 1Institute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University, Xiamen 361005, China
  • 2College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
  • 3Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA
  • 4Institute of Physical Science and Information Technology & Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei 230601, China

  • *wzyu@zju.edu.cn
  • †kenyon@xmu.edu.cn
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Phys. Rev. Lett. 121, 104501 – Published 7 September, 2018

DOI: https://doi.org/10.1103/PhysRevLett.121.104501

Abstract

By introducing concepts from transformation optics to the manipulation of water waves, we design and experimentally demonstrate two annular devices for concentrating waves, which employ gradient depth profiles based on Fabry-Pérot resonances. Our measurements and numerical simulations confirm the concentrating effect of the annular devices and show that they are effectively invisible to the water waves. We show that transformation optics is thus an effective framework for designing devices to improve the efficiency of wave energy collection, and we expect potential applications in coastline ocean engineering.

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More Energy from Ocean Waves

Published 7 September, 2018

A new structure concentrates water wave motion and could lead to improved techniques for harvesting this renewable energy resource.

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Phys. Rev. Lett. 121, 104501– Published 7 September, 2018
  • Received 25 April 2018
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