Experimental study on circulating filtration of micro particles based on metal rubber and dielectrophoretic effect

SONG Chunlei; REN Yukun; HE Wenjun; JIANG Tianyi; JIANG Hongyuan

doi:10.11729/syltlx20190152

Volume 34 Issue 2

Apr. 2020

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Journal of Experiments in Fluid Mechanics > 2020 > 34(2): 39-45. > DOI: 10.11729/syltlx20190152

SONG Chunlei, REN Yukun, HE Wenjun, JIANG Tianyi, JIANG Hongyuan. Experimental study on circulating filtration of micro particles based on metal rubber and dielectrophoretic effect[J]. Journal of Experiments in Fluid Mechanics, 2020, 34(2): 39-45. DOI: 10.11729/syltlx20190152

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Experimental study on circulating filtration of micro particles based on metal rubber and dielectrophoretic effect

1.
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
2.
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China

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Received Date: November 11, 2019
Revised Date: March 13, 2020

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Abstract

Abstract

In order to improve the filtration capacity of the metal rubber sheet, the porous metal rubber sheet is combined with the dielectrophoresis, and the high-efficiency pumping function of the liquid metal droplet in the confined space is utilized to research the filtration performance of the metal rubber sheet on the 5 μm polystyrene microspheres. A pair of metal rubber sheets is parallelly embedded in the close-looped circulating microfluidics channel to achieve an AC field gradient for effective dielectrophoresis. The results show that it is difficult to realize the filtering function without applying an AC electric field as the aperture of the pores inside the metal rubber sheet is much larger than the diameter of latex beads. As long as the two pairs of electrodes are energized synergistically, the suspended colloids can be trapped by short-range dielectrophoresis force near the metal rubber sheets, which can significantly improve the filtering quality.
- metal rubber,
- dielectrophoresis,
- filtration efficiency,
- microparticles,
- microfluidics

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Experimental study on circulating filtration of micro particles based on metal rubber and dielectrophoretic effect

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