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Issue 21, 2009
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A simple sheath-flow microfluidic device for micro/nanomanufacturing: fabrication of hydrodynamically shaped polymer fibers

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Abstract

A simple sheath flow microfluidic device is used to fabricate polymer micro/nanofibers that have precisely controlled shapes and sizes. Poly(methylmethacrylate) (PMMA) was used as the model polymer for these experiments. The sheath-flow device uses straight diagonal and chevron-shaped grooves integrated in the top and bottom walls of the flow channel to move sheath fluid completely around the polymer stream. Portions of the sheath stream are deflected in such a way as to define the cross-sectional shape of the polymer core. The flow-rate ratio between the sheath and core solution determines the fiber diameter. Round PMMA fibers with a diameter as small as 300 nm and flattened fibers with a submicron thickness are demonstrated.

Graphical abstract: A simple sheath-flow microfluidic device for micro/nanomanufacturing: fabrication of hydrodynamically shaped polymer fibers

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Publication details

The article was received on 29 May 2009, accepted on 31 Jul 2009 and first published on 21 Aug 2009


Article type: Paper
DOI: 10.1039/B910581F
Citation: Lab Chip, 2009,9, 3126-3130
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    A simple sheath-flow microfluidic device for micro/nanomanufacturing: fabrication of hydrodynamically shaped polymer fibers

    A. L. Thangawng, P. B. Howell Jr, J. J. Richards, J. S. Erickson and F. S. Ligler, Lab Chip, 2009, 9, 3126
    DOI: 10.1039/B910581F

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