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Issue 18, 2013
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Size based sorting and patterning of microbeads by evaporation driven flow in a 3D micro-traps array

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Abstract

We present a three-dimensional (3D) micro-traps array for size selective sorting and patterning of microbeads via evaporation-driven capillary flow. The interconnected micro-traps array was manufactured by silicon micromachining. Microliters of aqueous solution containing particle mixtures of different sized (0.2 to 20 μm diameter) beads were dispensed onto the micro-traps substrate. The smaller particles spontaneously wicked towards the periphery of the chip, while the larger beads were orderly docked within the micro-traps array.

Graphical abstract: Size based sorting and patterning of microbeads by evaporation driven flow in a 3D micro-traps array

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Publication details

The article was received on 26 Feb 2013, accepted on 02 Jul 2013 and first published on 03 Jul 2013


Article type: Technical Innovation
DOI: 10.1039/C3LC50274K
Citation: Lab Chip, 2013,13, 3663-3667
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    Size based sorting and patterning of microbeads by evaporation driven flow in a 3D micro-traps array

    C. C. Wong, Y. Liu, K. Y. Wang and A. R. A. Rahman, Lab Chip, 2013, 13, 3663
    DOI: 10.1039/C3LC50274K

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