Measuring acoustic energy density in microchannel acoustophoresis using a simple and rapid light-intensity method

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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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.
Original languageEnglish
JournalLab On a Chip
Publication date2012
Volume12
Journal number13
Pages2337-2344
ISSN1473-0197
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 10
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