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Engineering the surface properties of microfluidic stickers

Lab on a Chip, ISSN: 1473-0189, Vol: 12, Issue: 17, Page: 3028-3031
2012
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Article Description

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. © 2012 The Royal Society of Chemistry.

Bibliographic Details

Levaché, Bertrand; Azioune, Ammar; Bourrel, Maurice; Studer, Vincent; Bartolo, Denis

Royal Society of Chemistry (RSC)

Chemical Engineering; Biochemistry, Genetics and Molecular Biology; Chemistry; Engineering

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