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journal article Mar 19, 2020

Separation of micro and sub‐micro diamagnetic particles in dual ferrofluid streams based on negative magnetophoresis

Chun‐Dong Xue ORCID Zhong‐Ping Sun Yong‐Jiang Li Jiakai Chen ORCID Bo Liu ORCID Kai‐Rong Qin
ELECTROPHORESIS Vol. 41 No. 10-11 pp. 909-916 · Wiley
View at Publisher Save 10.1002/elps.202000002
Abstract
AbstractIn the present study, we numerically demonstrate an approach for separation of micro and sub‐micro diamagnetic particles in dual ferrofluid streams based on negative magnetophoresis. The dual streams are constructed by an intermediate sheath flow, after which the negative magnetophoretic force induced by an array of permanent magnets dominates the separation of diamagnetic particles. A simple and efficient numerical model is developed to calculate the motions of particles under the action of magnetic field and flow field. Effects of the average flow velocity, the ratio of sheath fluid flow to sample fluid flow, the number of the magnet pair as well as the position of magnet pair are investigated. The optimal parametric condition for complete separation is obtained through the parametric analysis, and the separation principle is further elucidated by the force analysis. The separation of smaller micro and sub‐micro diamagnetic particles is finally demonstrated. This study provides an insight into the negative magnetophoretic phenomenon and guides the fabrication of feasible, low‐cost diagnostic devices for sub‐micro particle separation.
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References
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Cao Q. Mater. Horiz. (2020)
[30]
Furlani E. P. (2001)
[36]
Rosensweig R. E. (1985)
Metrics
15
Citations
41
References
Details
Published
Mar 19, 2020
Vol/Issue
41(10-11)
Pages
909-916
License
View
Authors
C
Chun‐Dong Xue

School of Optoelectronic Engineering and Instrumentation Science Dalian University of Technology Dalian P. R. China

Z
Zhong‐Ping Sun

School of Biomedical Engineering Faculty of Electronic Information and Electrical Engineering Dalian University of Technology Dalian P. R. China

Y
Yong‐Jiang Li

School of Optoelectronic Engineering and Instrumentation Science Dalian University of Technology Dalian P. R. China

J
Jiakai Chen

The First Affiliated Hospital of Dalian Medical University Dalian P. R. China

B
Bo Liu

School of Biomedical Engineering Faculty of Electronic Information and Electrical Engineering Dalian University of Technology Dalian P. R. China

K
Kai‐Rong Qin

School of Optoelectronic Engineering and Instrumentation Science Dalian University of Technology Dalian P. R. China

Funding
National Natural Science Foundation of China Award: 11802054
China Postdoctoral Science Foundation Award: 2019M651106
Doctoral Start-up Foundation of Liaoning Province Award: 20170520388
Cite This Article
Chun‐Dong Xue, Zhong‐Ping Sun, Yong‐Jiang Li, et al. (2020). Separation of micro and sub‐micro diamagnetic particles in dual ferrofluid streams based on negative magnetophoresis. ELECTROPHORESIS, 41(10-11), 909-916. https://doi.org/10.1002/elps.202000002
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