TY - JOUR

T1 - Measuring acoustic energy density in microchannel acoustophoresis using a simple and rapid light-intensity method

AU - Barnkob,Rune

AU - Iranmanesh,Ida

AU - Wiklund,Martin

AU - Bruus,Henrik

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

U2 - 10.1039/c2lc40120g

DO - 10.1039/c2lc40120g

M3 - Journal article

VL - 12

SP - 2337

EP - 2344

JO - Lab on a Chip

T2 - Lab on a Chip

JF - Lab on a Chip

SN - 1473-0197

IS - 13

ER -