Acoustic tweezers based on the focused field hold the promise of contactless manipulation of microparticles. However, acoustic diffraction severely limits the trapping strength and the minimum size of the trapped particles in conventional diffraction-limited systems. Here, we propose and demonstrate a simple cylindrical shell structure for the trapping of microparticles with a radius as small as 1/400 of the corresponding acoustic wavelength, and its trapping ability is much stronger than that of the standing wave. This mechanism is attributed to the significantly enhanced acoustic radiation force originating from the resonant excitation of low order circumferential modes intrinsically existing in the cylindrical shell, which is a highly localized field around its surfaces. Cylindrical shell-based acoustic tweezers are simple, disposable, low cost, biocompatible, and functional, which may be of interest for nano-scale manufacturing and biomedical applications such as bio-printing, cell culturing, and tissue engineering.
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3 August 2020
Research Article|
August 04 2020
Trapping of sub-wavelength microparticles and cells in resonant cylindrical shells
Special Collection:
Acoustic Tweezers
Qin Lin;
Qin Lin
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
2
Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences
, Shenzhen 518055, China
3
School of Information Engineering, Guangdong Medical University
, Dongguan 523808, China
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Wei Zhou;
Wei Zhou
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Feiyan Cai
;
Feiyan Cai
a)
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
4
Shenzhen Key Laboratory of Ultrasound Imaging and Therapy
, Shenzhen 518055, China
5
Key Laboratory of Health Informatics, Chinese Academy of Sciences
, Shenzhen 518055, China
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Fei Li;
Fei Li
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Xiangxiang Xia;
Xiangxiang Xia
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Jieqiong Wang;
Jieqiong Wang
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Degang Zhao
;
Degang Zhao
6
Department of Physics, Huazhong University of Science and Technology
, Wuhan 430074, China
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Fei Yan;
Fei Yan
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Long Meng
;
Long Meng
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
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Hairong Zheng
Hairong Zheng
a)
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences
, Shenzhen 518055, China
5
Key Laboratory of Health Informatics, Chinese Academy of Sciences
, Shenzhen 518055, China
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Appl. Phys. Lett. 117, 053501 (2020)
Article history
Received:
June 25 2020
Accepted:
July 21 2020
Citation
Qin Lin, Wei Zhou, Feiyan Cai, Fei Li, Xiangxiang Xia, Jieqiong Wang, Degang Zhao, Fei Yan, Long Meng, Hairong Zheng; Trapping of sub-wavelength microparticles and cells in resonant cylindrical shells. Appl. Phys. Lett. 3 August 2020; 117 (5): 053501. https://doi.org/10.1063/5.0019758
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