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arXiv · 2601.07166

Dynamic Water-Wave Tweezers

Jun Wang·Shanhe Pang·Zhiyuan Che·Chang Liu·Wenzhe Liu·Haoyu Xie·Shipeng Li·Zhongxia Du·Xilai Hu·Yanyong Li·Bo Wang·Lei Shi·Konstantin Y. Bliokh·Yijie Shen
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Abstract

Following a recent demonstration of stable trapping of floating particles by stationary (monochromatic) structured water waves [Nature 638, 394 (2025)], we report dynamic water-wave tweezers that enable controllable transport of the trapped particle along an arbitrary trajectory on the water surface. Furthermore, we demonstrate simultaneous transport of two trapped particles along different trajectories. We employ a triangular lattice formed by the interference of three plane waves, which can trap particles, depending on the wave frequency and particle parameters, either at intensity maxima or at intensity zeros (vortices). By introducing small frequency detunings of the interfering waves, we control 2D motion of the lattice and trapped particles. This approach is robust and effective over a relatively broad range of particle sizes and wave frequencies, offering remarkable new possibilities for noncontact manipulation of floating (e.g., biological and soft-matter) objects in fluidic environments.

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Jun Wang, Shanhe Pang, Zhiyuan Che, Chang Liu, Wenzhe Liu, Haoyu Xie, Shipeng Li, Zhongxia Du, Xilai Hu, Yanyong Li, Bo Wang, Lei Shi, Konstantin Y. Bliokh, Yijie Shen. 2026-01-12. Dynamic Water-Wave Tweezers. https://doi.org/10.1103/d7f7-msff

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