Transverse Particle Trapping Using Finite Bessel Beams Based on Acoustic Metamaterials

Xudong Fan, Yifan Zhu, Zihao Su, Ning Li, Xiaolong Huang, Yang Kang, Can Li, Chunsheng Weng, Hui Zhang, Weiwei Kan, and Badreddine Assouar

Phys. Rev. Applied 19, 034032 – Published 9 March 2023

Abstract

We investigate the transverse trapping force acting on a small particle on or off the central axis of zero-order finite Bessel beams. Combining the simulated fields with the Gorkov force potential, the transverse trapping behaviors for small objects are analyzed, and the reversal of the trapping behaviors is recovered when varying the paraxiality parameter of the Bessel beam. The results prove the possibility of using axisymmetric Bessel beams to trap both dense and stiff particles as well as light and soft ones. The particles can be trapped at the maximum central pressure in the main lobe and also the maximum pressure of the other transverse locations. A lossy acoustic metastructure with the ability to decouple the phase and amplitude modulations is used to generate the desired sound field, which is used to trap a foam ball as an example. Our research opens a promising avenue to the design and development of simplified acoustic tweezers.

Received 31 October 2022
Accepted 13 February 2023

DOI:https://doi.org/10.1103/PhysRevApplied.19.034032

Physics Subject Headings (PhySH)

Acoustic metamaterials Acoustic wave phenomena Acoustics

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Xudong Fan ^1,*, Yifan Zhu², Zihao Su², Ning Li¹, Xiaolong Huang¹, Yang Kang¹, Can Li ¹, Chunsheng Weng¹, Hui Zhang ^2,†, Weiwei Kan^3,‡, and Badreddine Assouar ^4,§

¹National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
²Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189, China
³School of Science, MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
⁴Université de Lorraine, CNRS, Institut Jean Lamour, F-54000 Nancy, France

^*fanxudong@njust.edu.cn
^†seuzhanghui@seu.edu.cn
^‡kan@njust.edu.cn
^§badreddine.assouar@univ-lorraine.fr

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Vol. 19, Iss. 3 — March 2023

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