Inproceedings,

Clogging Pressure of Bubbles in Microchannel Contractions: Theory and Experiments

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Nanotech 2004, NSTI, (Mar 9, 2004)

Abstract

We present a theoretical, numerical, and experimen- tal study of bubbles passing through a microchannel contraction. A certain pressure, the so-called clogging pressure, is needed to push a bubble through a mi- crochannel contraction. We present the first experimen- tal results on such systems and compare them to results from a theoretical model first presented at NanoTech 2003 1. The experiments and theory are seen to be in quite good agreement and we give possible explanations for some of the discrepancies.

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