Abstract
We present a co-flow microfluidic method to coat paramagnetic beads with a thin layer of fluid as the beads are pulled across a liquid-liquid interface by an external magnetic field. We show that the coating thickness can be controlled by the magnitude of the flow speed. Also, the number of beads aggregated within a single coating can be adjusted by varying the strength of the magnetic field or the liquid-liquid interfacial tension.
Original language | English (US) |
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Article number | 153509 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 15 |
DOIs | |
State | Published - Oct 10 2011 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)