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Open AccessArticle

Modeling and Analysis of the Two-Dimensional Axisymmetric Acoustofluidic Fields in the Probe-Type and Substrate-Type Ultrasonic Micro/Nano Manipulation Systems

by Pengzhan Liu 1,2,*, Qiang Tang 3, Songfei Su 4, Jie Hu 5 and Yang Yu 6,*
1
State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2
Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA
3
Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huaian 223003, China
4
School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, China
5
School of Engineering, Jiangxi Agricultural University, Nanchang 330045, China
6
School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(1), 22; https://doi.org/10.3390/mi11010022
Received: 28 November 2019 / Revised: 13 December 2019 / Accepted: 20 December 2019 / Published: 24 December 2019
(This article belongs to the Special Issue Acoustofluidics)
The probe-type and substrate-type ultrasonic micro/nano manipulation systems have proven to be two kinds of powerful tools for manipulating micro/nanoscale materials. Numerical simulations of acoustofluidic fields in these two kinds of systems can not only be used to explain and analyze the physical mechanisms of experimental phenomena, but also provide guidelines for optimization of device parameters and working conditions. However, in-depth quantitative study and analysis of acoustofluidic fields in the two ultrasonic micro/nano manipulation systems have scarcely been reported. In this paper, based on the finite element method (FEM), we numerically investigated the two-dimensional (2D) axisymmetric acoustofluidic fields in the probe-type and substrate-type ultrasonic micro/nano manipulation systems by the perturbation method (PM) and Reynolds stress method (RSM), respectively. Through comparing the simulation results computed by the two methods and the experimental verifications, the feasibility and reasonability of the two methods in simulating the acoustofluidic fields in these two ultrasonic micro/nano manipulation systems have been validated. Moreover, the effects of device parameters and working conditions on the acoustofluidic fields are clarified by the simulation results and qualitatively verified by the experiments. View Full-Text
Keywords: acoustic streaming; acoustofluidics; micro/nano; manipulation; FEM acoustic streaming; acoustofluidics; micro/nano; manipulation; FEM
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Liu, P.; Tang, Q.; Su, S.; Hu, J.; Yu, Y. Modeling and Analysis of the Two-Dimensional Axisymmetric Acoustofluidic Fields in the Probe-Type and Substrate-Type Ultrasonic Micro/Nano Manipulation Systems. Micromachines 2020, 11, 22.

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