journal article·2025-03Open access

Observations of Cherenkov‐Like Radial Wake in Water Waves

Zijian Qin, Lian Shen, Yihao Yang, Hongsheng Chen, Huaping Wang

Advanced Science· Volume 12· Issue 11

Abstract

Abstract Cherenkov radiation (CR) is a fascinating phenomenon that occurs not only in electromagnetic (EM) waves but also in water waves. The V‐shaped wake formed by a moving object on the water surface results from the constructive interference of water waves of different wavelengths, similar to CR. We designed and fabricated a one‐dimensional (1D) water wave crystal to analogize the behavior of moving particles in water waves. This crystal exhibits a band structure with both positive (positive group velocity) and negative slopes (negative group velocity), exciting and directing the water waves to produce forward and backward radiating wakes through a mechanism similar to CR. Notably, the radiation angle is easily adjustable. This method of regulating water wave wakes holds potential applications in scattering cancellation‐based wake stealth, navigation technology, and fluid dynamics for future offshore vessels.
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Research context

OpenAlex topics: Antenna Design and Analysis · Ocean Waves and Remote Sensing · Radio Wave Propagation Studies

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

Affiliations

Key Laboratory of Ocean Observation‑Imaging Testbed of Zhejiang Province Ocean College Zhejiang University Hangzhou 310058 China

State Key Laboratory of Extreme Photonics and Instrumentation ZJU‐Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou 310027 China

International Joint Innovation Center The Electromagnetics Academy at Zhejiang University Zhejiang University Haining 314400 China

Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China

Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Jinhua Institute of Zhejiang University Zhejiang University Jinhua 321099 China

Shaoxing Institute of Zhejiang University Zhejiang University Shaoxing 312000 China

Funding

National Natural Science Foundation of China · Key Research and Development Program of Zhejiang Province · Fundamental Research Funds for the Central Universities

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