Proof of principle study of ultrasonic particle manipulation by a circular array device

A feasibility study of a circular ultrasonic array device for acoustic particle manipulation is presented. A general approach based on Green's function is developed to analyse the underlying properties of a circular acoustic array. It allows the size of a controllable device area as a function...

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Bibliographic Details
Published in:Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences Mathematical, physical, and engineering sciences, 2012-11, Vol.468 (2147), p.3571-3586
Main Authors: Grinenko, Alon, Wilcox, Paul D., Courtney, Charles R. P., Drinkwater, Bruce W.
Format: Article
Language:English
Subjects:
Acoustic Radiation Force
Arrays
Boundary conditions
Circularity
Devices
Greens function
Landscapes
Mathematical analysis
Mathematical models
Narrative devices
Particle Manipulation
Pressure distribution
Sound waves
Stability
Standing waves
Transducers
Trapped particles
Trapping
Tweezers
Ultrasonics
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Summary:A feasibility study of a circular ultrasonic array device for acoustic particle manipulation is presented. A general approach based on Green's function is developed to analyse the underlying properties of a circular acoustic array. It allows the size of a controllable device area as a function of the number of array elements to be established and the array excitation required to produce a desired field distribution to be determined. A set of quantitative parameters characterizing the complexity of the pressure landscape is suggested, and relation to the number of array elements is found. Next, a finite-element model of a physically realizable circular piezo-acoustic array device is employed to demonstrate that the trapping capability can be achieved in practice.
ISSN:1364-5021
1471-2946
DOI:10.1098/rspa.2012.0232