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Issue 1, 2015
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Microscale anechoic architecture: acoustic diffusers for ultra low power microparticle separation via traveling surface acoustic waves

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Abstract

We present a versatile and very low-power traveling SAW microfluidic sorting device able to displace and separate particles of different diameter in aqueous suspension; the travelling wave propagates through the fluid bulk and diffuses via a Schröder diffuser, adapted from its typical use in concert hall acoustics to be the smallest such diffuser to be suitable for microfluidics. The effective operating power range is two to three orders of magnitude less than current SAW devices, uniquely eliminating the need for amplifiers, and by using traveling waves to impart forces directly upon suspended microparticles, they can be separated by size.

Graphical abstract: Microscale anechoic architecture: acoustic diffusers for ultra low power microparticle separation via traveling surface acoustic waves

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Publication details

The article was received on 17 Jun 2014, accepted on 16 Oct 2014 and first published on 16 Oct 2014


Article type: Communication
DOI: 10.1039/C4LC00704B
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Lab Chip, 2015,15, 43-46

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    Microscale anechoic architecture: acoustic diffusers for ultra low power microparticle separation via traveling surface acoustic waves

    J. Behrens, S. Langelier, A. R. Rezk, G. Lindner, L. Y. Yeo and J. R. Friend, Lab Chip, 2015, 15, 43
    DOI: 10.1039/C4LC00704B

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