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Issue 23, 2015
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A microfluidic bubble trap and oscillator

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Abstract

A new approach to trap air bubbles before they enter microfluidic systems is presented. The bubble trap is based on the combined interaction of surface tension and hydrodynamic forces. The design is simple, easy to fabricate and straightforward to use. The trap is made of tubes of different sizes and can easily be integrated into any microfluidic setup. We describe the general working principle and derive a simple theoretical model to explain the trapping. Furthermore, the natural oscillations of trapped air bubbles created in this system are explained and quantified in terms of bubble displacement over time and oscillation frequency. These oscillations may be exploited as a basis for fluidic oscillators in future microfluidic systems.

Graphical abstract: A microfluidic bubble trap and oscillator

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Supplementary files

Article information


Submitted
27 May 2015
Accepted
05 Oct 2015
First published
12 Oct 2015

This article is Open Access

Lab Chip, 2015,15, 4393-4397
Article type
Technical Innovation
Author version available

A microfluidic bubble trap and oscillator

J. D. Stucki and O. T. Guenat, Lab Chip, 2015, 15, 4393
DOI: 10.1039/C5LC00592B

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

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    [Original citation] - Published by The Royal Society of Chemistry.

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