Contactless acoustic manipulation and sorting of particles by dynamic acoustic fields

Andrade, M. A.B., Skotis, G. D., Ritchie, S., Cumming, D. R.S. , Riehle, M. O. and Bernassau, A. L. (2016) Contactless acoustic manipulation and sorting of particles by dynamic acoustic fields. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 63(10), pp. 1593-1600. (doi:10.1109/TUFFC.2016.2608759)

Andrade, M. A.B., Skotis, G. D., Ritchie, S., Cumming, D. R.S. , Riehle, M. O. and Bernassau, A. L. (2016) Contactless acoustic manipulation and sorting of particles by dynamic acoustic fields. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 63(10), pp. 1593-1600. (doi:10.1109/TUFFC.2016.2608759)

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Abstract

This paper presents a contactless, acoustic technique to manipulate and sort particles of varying size in both liquid and air media. An acoustic standing wave is generated by the superposition of counterpropagating waves emitted by two opposing emitters. The acoustic radiation force traps the smallest particles at the pressure nodes of the acoustic standing wave. The position of the particles can be manipulated by dynamically changing the phase difference between the two emitters. By applying a dynamic acoustic field (DAF), it is demonstrated that particles can be manipulated spatially and sorted according to size. The discrimination (sorting dynamic range) capability is initially demonstrated in liquid media by separating three different sets of polystyrene particles, ranging in size from 5 to 45μm in diameter. The separation between particles was performed up to a ratio of 5/6 in diameter (20% diameter difference). Finally, the scalability of the DAF method is demonstrated by sorting expanded polystyrene particles of 2 and 5 mm diameter in air.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Bernassau, Dr Anne and Riehle, Dr Mathis
Authors: Andrade, M. A.B., Skotis, G. D., Ritchie, S., Cumming, D. R.S., Riehle, M. O., and Bernassau, A. L.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0885-3010
Published Online:12 September 2016
Copyright Holders:Copyright © 2016 IEEE
First Published:First published in IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 63(10): 1593-1600
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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