Microfluidic resonant cavities enable acoustophoresis on a disposable superstrate

Witte, C., Reboud, J. , Wilson, R. , Cooper, J.M. and Neale, S.L. (2014) Microfluidic resonant cavities enable acoustophoresis on a disposable superstrate. Lab on a Chip, 14(21), pp. 4277-4283. (doi:10.1039/C4LC00749B)

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Publisher's URL: http://dx.doi.org/10.1039/C4LC00749B

Abstract

We demonstrate surface acoustic wave (SAW) induced microparticle manipulation in a microstructured disposable glass-polymer composite superstrate, positioned on a piezoelectric substrate with a single, slanted SAW transducer. An excited SAW was coupled from the piezoelectric substrate into the superstrate, which acted as a transversal resonator structure. We show that the energy transmitted into the superstrate allowed acoustophoretic particle manipulation, while the wide frequency response of the SAW transducer enabled tuneable pressure distributions confined by the microchannel layout. The configuration provides a significant tolerance in positioning – making assembly easy.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Wilson, Dr Robert and Cooper, Professor Jonathan and Reboud, Dr Julien and Witte, Dr Christian and Neale, Dr Steven
Authors: Witte, C., Reboud, J., Wilson, R., Cooper, J.M., and Neale, S.L.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Lab on a Chip
Publisher:Royal Society of Chemistry
ISSN:1473-0197
ISSN (Online):1473-0189
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Lab On a Chip 14(21):4277-4283
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
506171Micro-Actuators Controlled by Optoelectronic Tweezers (MACOET)Jonathan CooperThe Royal Academy of Engineering (RAE)EP/G058393/1ENG - BIOMEDICAL ENGINEERING
617021Advanced Diagnostics using PhononicsJonathan CooperEngineering & Physical Sciences Research Council (EPSRC)EP/K027611/1ENG - BIOMEDICAL ENGINEERING
553521Next Generation Analytical Tools: Application to Protein Oxidations that affect Human Health and WellbeingJonathan CooperEngineering & Physical Sciences Research Council (EPSRC)EP/I017887/1ENG - BIOMEDICAL ENGINEERING