ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Acoustic radiation force on a multilayered sphere in a Gaussian standing field |
Haibin Wang(汪海宾)1, Xiaozhou Liu(刘晓宙)1,2, Sha Gao(高莎)1, Jun Cui(崔骏)1, Jiehui Liu(刘杰惠)1, Aijun He(何爱军)3, Gutian Zhang(张古田)4 |
1 Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China; 2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; 3 School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China; 4 Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210093, China |
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Abstract We develop a model for calculating the radiation force on spherically symmetric multilayered particles based on the acoustic scattering approach. An expression is derived for the radiation force on a multilayered sphere centered on the axis of a Gaussian standing wave propagating in an ideal fluid. The effects of the sound absorption of the materials and sound wave on acoustic radiation force of a multilayered sphere immersed in water are analyzed, with particular emphasis on the shell thickness of every layer, and the width of the Gaussian beam. The results reveal that the existence of particle trapping behavior depends on the choice of the non-dimensional frequency ka, as well as the shell thickness of each layer. This study provides a theoretical basis for the development of acoustical tweezers in a Gaussian standing wave, which may benefit the improvement and development of acoustic control technology, such as trapping, sorting, and assembling a cell, and drug delivery applications.
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Received: 27 October 2017
Revised: 05 December 2017
Accepted manuscript online:
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PACS:
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43.25.Qp
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(Radiation pressure?)
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43.35.Wa
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(Biological effects of ultrasound, ultrasonic tomography)
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43.80.Gx
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(Mechanisms of action of acoustic energy on biological systems: physical processes, sites of action)
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Fund: Project supported by National Key R&D Program of China (Grant No. 2016YFF0203000), the National Natural Science Foundation of China (Grant Nos. 11774167 and 61571222), the Fundamental Research Funds for the Central Universities of China (Grant No. 020414380001), the Key Laboratory of Underwater Acoustic Environment, Institute of Acoustics, Chinese Academy of Sciences (Grant No. SSHJ-KFKT-1701), and the AQSIQ Technology R&D Program of China (Grant No. 2017QK125). |
Corresponding Authors:
Xiaozhou Liu
E-mail: xzliu@nju.edu.cn
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Cite this article:
Haibin Wang(汪海宾), Xiaozhou Liu(刘晓宙), Sha Gao(高莎), Jun Cui(崔骏), Jiehui Liu(刘杰惠), Aijun He(何爱军), Gutian Zhang(张古田) Acoustic radiation force on a multilayered sphere in a Gaussian standing field 2018 Chin. Phys. B 27 034302
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