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Issue 15, 2013
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Rapid fabrication of pressure-driven open-channel microfluidic devices in omniphobic RF paper

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Abstract

This paper describes the fabrication of pressure-driven, open-channel microfluidic systems with lateral dimensions of 45–300 microns carved in omniphobic paper using a craft-cutting tool. Vapor phase silanization with a fluorinated alkyltrichlorosilane renders paper omniphobic, but preserves its high gas permeability and mechanical properties. When sealed with tape, the carved channels form conduits capable of guiding liquid transport in the low-Reynolds number regime (i.e. laminar flow). These devices are compatible with complex fluids such as droplets of water in oil. The combination of omniphobic paper and a craft cutter enables the development of new types of valves and switches, such as “fold valves” and “porous switches,” which provide new methods to control fluid flow.

Graphical abstract: Rapid fabrication of pressure-driven open-channel microfluidic devices in omniphobic RF paper

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Publication details

The article was received on 21 Mar 2013, accepted on 09 May 2013 and first published on 10 May 2013


Article type: Paper
DOI: 10.1039/C3LC50371B
Citation: Lab Chip, 2013,13, 2922-2930
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    Rapid fabrication of pressure-driven open-channel microfluidic devices in omniphobic RF paper

    A. C. Glavan, R. V. Martinez, E. J. Maxwell, A. B. Subramaniam, R. M. D. Nunes, S. Soh and G. M. Whitesides, Lab Chip, 2013, 13, 2922
    DOI: 10.1039/C3LC50371B

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