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

doi:10.1063/1.2227517

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 journal › Article › peer-review

82 Scopus citations

Abstract

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 language	English (US)
Article number	034106
Journal	Applied Physics Letters
Volume	89
Issue number	3
DOIs	https://doi.org/10.1063/1.2227517
State	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2227517

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title = "Discrete magnetic microfluidics",

abstract = "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.",

author = "Ana Egatz-G{\'o}mez and Sonia Melle and Antonio Garcia and Lindsay, {S. A.} and M. M{\'a}rquez and P. Dom{\'i}nguez-Garc{\'i}a and Rubio, {Miguel A.} and Picraux, {S. T.} and Taraci, {J. L.} and T. Clement and D. Yang and Mark Hayes and Devens Gust",

note = "Funding Information: The authors wish to acknowledge G. G. Fuller for fruitful discussions. This work has been partially supported by MEC (Spain) under Grant No. FIS2005-00134 and by CAM (Spain) under Grant No. S0505/MAT/0227.",

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language = "English (US)",

volume = "89",

journal = "Applied Physics Letters",

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T1 - Discrete magnetic microfluidics

AU - Egatz-Gómez, Ana

AU - Melle, Sonia

AU - Garcia, Antonio

AU - Lindsay, S. A.

AU - Márquez, M.

AU - Domínguez-García, P.

AU - Rubio, Miguel A.

AU - Picraux, S. T.

AU - Taraci, J. L.

AU - Clement, T.

AU - Yang, D.

AU - Hayes, Mark

AU - Gust, Devens

N1 - Funding Information: The authors wish to acknowledge G. G. Fuller for fruitful discussions. This work has been partially supported by MEC (Spain) under Grant No. FIS2005-00134 and by CAM (Spain) under Grant No. S0505/MAT/0227.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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Discrete magnetic microfluidics

Abstract

ASJC Scopus subject areas

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