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Issue 18, 2009
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A millisecond micromixer via single-bubble-based acoustic streaming

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Abstract

We present ultra-fast homogeneous mixing inside a microfluidic channelvia single-bubble-based acoustic streaming. The device operates by trapping an air bubble within a “horse-shoe” structure located between two laminar flows inside a microchannel. Acoustic waves excite the trapped air bubble at its resonance frequency, resulting in acoustic streaming, which disrupts the laminar flows and triggers the two fluids to mix. Due to this technique's simple design, excellent mixing performance, and fast mixing speed (a few milliseconds), our single-bubble-based acoustic micromixer may prove useful for many biochemical studies and applications.

Graphical abstract: A millisecond micromixer via single-bubble-based acoustic streaming

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Publication details

The article was received on 24 Feb 2009, accepted on 28 May 2009 and first published on 23 Jun 2009


Article type: Technical Note
DOI: 10.1039/B903687C
Citation: Lab Chip, 2009,9, 2738-2741
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    A millisecond micromixer via single-bubble-based acoustic streaming

    D. Ahmed, X. Mao, J. Shi, B. K. Juluri and T. J. Huang, Lab Chip, 2009, 9, 2738
    DOI: 10.1039/B903687C

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