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  • Title: Microfluidic capturing-dynamics of paramagnetic bead suspensions.
    Author: Mikkelsen C, Bruus H.
    Journal: Lab Chip; 2005 Nov; 5(11):1293-7. PubMed ID: 16234954.
    Abstract:
    We study theoretically the capturing of paramagnetic beads by a magnetic field gradient in a microfluidic channel treating the beads as a continuum. Bead motion is affected by both fluidic and magnetic forces. The transfer of momentum from beads to the fluid creates an effective bead-bead interaction that greatly aids capturing. We demonstrate that for a given inlet flow speed a critical density of beads exists above which complete capturing takes place.
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