Discrete magnetic microfluidics

Ana Egatz-Gómez, Sonia Melle, Antonio Garcia, S. A. Lindsay, M. Márquez, P. Domínguez-García, Miguel A. Rubio, S. T. Picraux, J. L. Taraci, T. Clement, D. Yang, Mark Hayes, Devens Gust

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


We present a method to move and control drops of water on superhydrophobic surfaces using magnetic fields. Small water drops (volume of 5-35 μl) that contain fractions of paramagnetic particles as low as 0.1% in weight can be moved at relatively high speed (7 cm/s) by displacing a permanent magnet placed below the surface. Coalescence of two drops has been demonstrated by moving a drop that contains paramagnetic particles towards an aqueous drop that was previously pinned to a surface defect. This approach to microfluidics has the advantages of faster and more flexible control over drop movement.

Original languageEnglish (US)
Article number034106
JournalApplied Physics Letters
Issue number3
StatePublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Discrete magnetic microfluidics'. Together they form a unique fingerprint.

Cite this