Journal
ANALYTICAL CHEMISTRY
Volume 83, Issue 3, Pages 1148-1151Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac102563g
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Funding
- Natural Sciences and Engineering Research Council of Canada
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This paper describes a flow switching technique applicable to centrifugal microfluidic platforms, using a regulated stream of compressed gas. This pneumatic flow switching technique allows for flow control at a T-shaped junction between one inlet channel and two outlet channels. This technique provides a noncontact, robust, and efficient method for switching the direction of fluid flow while a disk is rotating at relatively low frequencies. The switching operation can be implemented reproducibly with applied gas flow rates between 17 and 58 L min(-1) and rotational frequencies between 400 rpm (6.6 Hz) and 1200 rpm (20 Hz).
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