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Capillary-Driven Microfluidic Chips for Miniaturized Immunoassays: Patterning Capture Antibodies Using Microcontact Printing and Dry-Film Resists

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Microchip Diagnostics

Part of the book series: Methods in Molecular Biology ((MIMB,volume 1547))

Abstract

The miniaturization of immunoassays using microfluidic devices is attractive for many applications, but an important challenge remains the patterning of capture antibodies (cAbs) on the surface of microfluidic structures. Here, we describe how to pattern cAbs on planar poly(dimethylsiloxane) (PDMS) stamps and how to microcontact print the cAbs on a dry-film resist (DFR). DFRs are new types of photoresists having excellent chemical resistance and good mechanical, adhesive, and optical properties. Instead of being liquid photoresists, DFRs are thin layers that are easy to handle, cut, photo-pattern, and laminate over surfaces. We show how to perform a simple fluorescence immunoassay using anti-biotin cAbs patterned on a 50-μm-thick DF-1050 DFR, Atto 647N-biotin analytes, and capillary-driven chips fabricated in silicon.

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Correspondence to Emmanuel Delamarche .

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Temiz, Y., Lovchik, R.D., Delamarche, E. (2017). Capillary-Driven Microfluidic Chips for Miniaturized Immunoassays: Patterning Capture Antibodies Using Microcontact Printing and Dry-Film Resists. In: Taly, V., Viovy, JL., Descroix, S. (eds) Microchip Diagnostics. Methods in Molecular Biology, vol 1547. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-6734-6_3

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  • DOI: https://doi.org/10.1007/978-1-4939-6734-6_3

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  • Publisher Name: Humana Press, New York, NY

  • Print ISBN: 978-1-4939-6732-2

  • Online ISBN: 978-1-4939-6734-6

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