Measuring acoustic energy density in microchannel acoustophoresis using a simple and rapid light-intensity method
We present a simple and rapid method for measuring the acoustic energy density in microchannel acoustophoresis based on light-intensity measurements of a suspension of particles. The method relies on the assumption that each particle in the suspension undergoes single-particle acoustophoresis. It is...
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Veröffentlicht in: | Lab on a chip 2012-01, Vol.12 (13), p.2337-2344 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We present a simple and rapid method for measuring the acoustic energy density in microchannel acoustophoresis based on light-intensity measurements of a suspension of particles. The method relies on the assumption that each particle in the suspension undergoes single-particle acoustophoresis. It is validated by the single-particle tracking method, and we show by proper re-scaling that the re-scaled light intensity plotted versus re-scaled time falls on a universal curve. The method allows for analysis of moderate-resolution images in the concentration range encountered in typical experiments, and it is an attractive alternative to particle tracking and particle image velocimetry for quantifying acoustophoretic performance in microchannels. |
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ISSN: | 1473-0197 1473-0189 1473-0189 |
DOI: | 10.1039/c2lc40120g |