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)|
|Journal||Applied Physics Letters|
|State||Published - Oct 10 2011|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)