Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields

C.R.P. Courtney; B.W. Drinkwater; A. Grinenko; P.D. Wilcox; C.E.M. Demore; S. Cochran

doi:10.1063/1.4798584

Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields

C.R.P. Courtney, B.W. Drinkwater, A. Grinenko, P.D. Wilcox, C.E.M. Demore, S. Cochran

Department of Mechanical Engineering

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Abstract

We show that Bessel-function acoustic pressure fields can be used to trap and controllably position microparticles. A circular, 16-element ultrasound array generates and manipulates an acoustic field within a chamber, trapping microparticles and agglomerates. Changes in the phase of the sinusoidal signals applied to the array elements result in the movement of the Bessel-function pressure field and hence the microparticles. This demonstrates ultrasonic manipulation analogous to holographic optical tweezers. The manipulation limits of the device are explained by the existence of unwanted resonances within the manipulation chamber.

Original language	English
Article number	123508
Journal	Applied Physics Letters
Volume	102
Issue number	12
DOIs	https://doi.org/10.1063/1.4798584
Publication status	Published - 25 Mar 2013

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10.1063/1.4798584

APL published
Copyright (2013) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Courtney, CRP, Drinkwater, BW, Grinenko, A, Wilcox, PD, Demore, CEM & Cochran, S 2013, 'Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields' Applied Physics Letters, vol 102, no. 12, and may be found at http://link.aip.org/link/doi/10.1063/1.4798584
Final published version, 1.31 MBLicence: Unspecified

Cite this

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Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields

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