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Issue 17, 2012
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Engineering the surface properties of microfluidic stickers

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Abstract

We introduce a simple and effective method to tailor the wetting and adhesion properties of thiolene-based microfluidic devices. This one-step lithographic scheme combines most of the advantages offered by the current methods employed to pattern microchannels: (i) the channel walls can be modified in situ or ex situ, (ii) their wettability can be varied in a continuous manner, (iii) heterogeneous patterning can be easily accomplished, with contact-angle contrasts extending from 0 to 90° for pure water, (iv) the surface modification has proven to be highly stable upon aging and heating. We first characterize the wetting properties of the modified surfaces. We then provide the details of two complementary methods to achieve surface patterning. Finally, we demonstrate the two methods with three examples of applications: the capillary guiding of fluids, the production of double emulsions, and the culture of cells on adhesive micropatterns.

Graphical abstract: Engineering the surface properties of microfluidic stickers

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Publication details

The article was received on 23 Mar 2012, accepted on 15 May 2012 and first published on 17 May 2012


Article type: Technical Innovation
DOI: 10.1039/C2LC40284J
Citation: Lab Chip, 2012,12, 3028-3031
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    Engineering the surface properties of microfluidic stickers

    B. Levaché, A. Azioune, M. Bourrel, V. Studer and D. Bartolo, Lab Chip, 2012, 12, 3028
    DOI: 10.1039/C2LC40284J

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