Journal
LAB ON A CHIP
Volume 9, Issue 21, Pages 3059-3065Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b905521e
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Funding
- Deutsche Forschungsgemeinschaft [1128]
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We present an analysis of concentration switching times in microfluidic devices. The limits of rapid switching are analyzed based on the theory of dispersion by Taylor and Aris and compared to both experiments and numerical simulations. We focus on switching times obtained by photo-activation of caged compounds in a micro-flow (flow photolysis). The performance of flow photolysis is compared to other switching techniques. A flow chart is provided to facilitate the application of our theoretical analysis to microfluidic switching devices.
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