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Issue 83, 2017, Issue in Progress
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Magnetofluidic micromixer based on a complex rotating magnetic field

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Abstract

Rapid and efficient mixing of particles and fluids in a microfluidic system is of great interest for chemical and biochemical analysis. The present paper investigates magnetofluidic mixing induced by a rotating magnetic field from a number of permanent magnets. Numerical simulation shows the complex magnetic field in the mixing chamber. Simulated particle tracing predicts the trajectories of diamagnetic particles in a paramagnetic medium for the different stationary positions of the magnets. The experimentally obtained trajectories show negative magnetophoresis similar to that predicted by the simulation. However, the static configuration of the magnets cannot achieve mixing of the diamagnetic particles. We demonstrated that a rotating magnetic field could yield up to 86% mixing efficiency at a flow rate of 60 μL min−1 using a diluted ferrofluid of only 1% volume concentration.

Graphical abstract: Magnetofluidic micromixer based on a complex rotating magnetic field

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Publication details

The article was received on 21 Jul 2017, accepted on 07 Nov 2017 and first published on 13 Nov 2017


Article type: Paper
DOI: 10.1039/C7RA08073E
RSC Adv., 2017,7, 52465-52474
  • Open access: Creative Commons BY license
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    Magnetofluidic micromixer based on a complex rotating magnetic field

    A. Munaz, H. Kamble, M. J. A. Shiddiky and N. Nguyen, RSC Adv., 2017, 7, 52465
    DOI: 10.1039/C7RA08073E

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