A bubble-driven microfluidic transport element for bioengineering

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Marmottant, Philippe and Hilgenfeldt, Sascha (2004) A bubble-driven microfluidic transport element for bioengineering. Proceedings of the National Academy of Sciences of the United States of America, PNAS, 101 (26). pp. 9523-9527. ISSN 0027-8424

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Abstract:Microfluidics typically uses channels to transport small objects by actuation forces such as an applied pressure difference or thermocapillarity. We propose that acoustic streaming is an alternative means of directional transport at small scales. Microbubbles on a substrate establish well controlled fluid motion on very small scales; combinations ("doublets") of bubbles and microparticles break the symmetry of the motion and constitute flow transport elements. We demonstrate the principle of doublet streaming and describe the ensuing transport. Devices based on doublet flow elements work without microchannels and are thus potentially cheap and highly parallelizable.
Item Type:Article
Copyright:© 2004 National Academy of Sciences of the United States of America
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/47816
Official URL:http://dx.doi.org/10.1073/pnas.0307007101
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Metis ID: 218709