Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/91954
| Title: | The use of acoustic streaming in sub-micron particle sorting | Authors: | Lai, TW Fu, SC Chan, KC Chao, CYH |
Issue Date: | 2022 | Source: | Aerosol science and technology, 2022, v. 56, no. 3, p. 247-260 | Abstract: | The lack of personal particulate matter (PM) monitoring technique hinders the knowledge of the negative health impacts caused by inhaling PM. Acoustophoresis has a potential to produce miniature particle sorters that can be carried inside human’s breath zone. Micron particles can be manipulated by Acoustic Radiation Force (ARF), but sub-micron particles can hardly be directed due to Acoustic Streaming Effect (ASE). The purpose of this study is to examine the feasibility of sorting sub-micron particles using ASE. In this study, a 2 D numerical model is used to simulate the movement of sub-micron particles, ranging from 0.1 µm to 0.9 µm in diameter with 0.1 µm step size, suspended in a microchannel. Since tiny particles circulate according to the streaming pattern, which depends on the geometry of the container, the effect of the microchannel’s cross-sectional shape on particle movement is investigated, from rectangular to non-rectangular. Results found that sub-micron particles are characterized as either ARF-dominant or ASE-dominant. ARF-dominant particles stop at the pressure node and sidewalls, while ASE-dominant particles are trapped by the streaming flow inside a certain area defined by the particle size. Larger ASE-dominant particles move in a narrower region close to the sidewalls; smaller particles occupy a wider area. Since ASE-dominant particles can be directed outside the settling location of ARF-dominated particles, separating them can reach 98.9% purity in a non-rectangular microchannel. Most importantly, separating ASE-dominant particles of different sizes is shown possible using a triangular microchannel. The findings imply that ASE can be the mechanism for sub-micron particle sorting. | Publisher: | Taylor & Francis | Journal: | Aerosol science and technology | ISSN: | 0278-6826 | EISSN: | 1521-7388 | DOI: | 10.1080/02786826.2021.2005769 | Rights: | Copyright © 2021 American Association for Aerosol Research This is an Accepted Manuscript of an article published by Taylor & Francis in Aerosol Science and Technology on 29 Nov 2021 (Published online), available online: http://www.tandfonline.com/10.1080/02786826.2021.2005769. |
| Appears in Collections: | Journal/Magazine Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Lai_Use_Acoustic_Streaming.pdf | Pre-Published version | 3.91 MB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
32
Last Week
0
0
Last month
Citations as of Jun 4, 2023
Downloads
2
Citations as of Jun 4, 2023
SCOPUSTM
Citations
1
Citations as of Jun 2, 2023
WEB OF SCIENCETM
Citations
1
Citations as of Jun 1, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.