Discrete magnetic microfluidics

被引：64

作者：

Egatz-Gomez, Ana ^{[1
]}

Melle, Sonia

Garcia, Antonio A.

Lindsay, S. A.

Marquez, M.

Dominguez-Garcia, P.

Rubio, Miguel A.

Picraux, S. T.

Taraci, J. L.

Clement, T.

Yang, D.

Hayes, Mark A.

Gust, Devens

机构：

[1] Arizona State Univ, Harrington Dept Bioengn, Tempe, AZ 85287 USA

[2] Univ Nacl Educ Distancia, Dept Fis Fundamental, Madrid 28040, Spain

[3] Arizona State Univ, Dept Chem & Mat Engn, Tempe, AZ 85287 USA

[4] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA

[5] Univ Complutense Madrid, Dept Opt, Madrid 28037, Spain

[6] Los Alamos Natl Lab, CINT, MST, Los Alamos, NM 87545 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 03期

关键词：

D O I：

10.1063/1.2227517

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a method to move and control drops of water on superhydrophobic surfaces using magnetic fields. Small water drops (volume of 5-35 mu l) 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. (c) 2006 American Institute of Physics.

引用

页数：3

共 27 条

[1] Low-friction flows of liquid at nanopatterned interfaces [J].

Cottin-Bizonne, C ;

Barrat, JL ;

Bocquet, L ;

Charlaix, E .

NATURE MATERIALS, 2003, 2 (04) :237-240

[2] Vapor-liquid-solid growth of germanium nanostructures on silicon [J].

Dailey, JW ;

Taraci, J ;

Clement, T ;

Smith, DJ ;

Drucker, J ;

Picraux, ST .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (12) :7556-7567

[3] Vibration-actuated drop motion on surfaces for batch microfluidic processes [J].

Daniel, S ;

Chaudhury, MK ;

de Gennes, PG .

LANGMUIR, 2005, 21 (09) :4240-4248

[4] Past drop movements resulting from the phase change on a gradient surface [J].

Daniel, S ;

Chaudhury, MK ;

Chen, JC .

SCIENCE, 2001, 291 (5504) :633-636

[5] Microfluidic actuation by modulation of surface stresses [J].

Darhuber, AA ;

Valentino, JP ;

Davis, JM ;

Troian, SM ;

Wagner, S .

APPLIED PHYSICS LETTERS, 2003, 82 (04) :657-659

[6]

DOMINGUES F, 1995, PHYS REV LETT, V75, P2972

[7]

*EPAPS, EAPPLAB89303629 EPAP

[8]

FAIR R, DIGITAL MICROFLUIDS

[9] STUDIES AT PHASE INTERFACES .1. SLIDING OF LIQUID DROPS ON SOLID SURFACES AND A THEORY FOR SPRAY RETENTION [J].

FURMIDGE, CG .

JOURNAL OF COLLOID SCIENCE, 1962, 17 (04) :309-&

[10] Micromechanics of magnetorheological suspensions [J].

Furst, EM ;

Gast, AP .

PHYSICAL REVIEW E, 2000, 61 (06) :6732-6739

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