Independent trapping and manipulation of microparticles using dexterous acoustic tweezers

Charles R. P. Courtney; Christine E. M. Demore; Hongxiao Wu; Alon Grinenko; Paul D. Wilcox; Sandy Cochran; Bruce W. Drinkwater

doi:10.1063/1.4870489

Independent trapping and manipulation of microparticles using dexterous acoustic tweezers

Charles R. P. Courtney (Lead / Corresponding author), Christine E. M. Demore, Hongxiao Wu, Alon Grinenko, Paul D. Wilcox, Sandy Cochran, Bruce W. Drinkwater

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Abstract

An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap particles in larger regions than is possible with first-order traps. The acoustic tweezers consist of a circular 64-element ultrasonic array operating at 2.35MHz which generates ultrasonic pressure fields in a millimeter-scale fluid-filled chamber. The manipulation capabilities were demonstrated experimentally with 45 and 90-lm-diameter polystyrene spheres. These capabilities bring the dexterity of acoustic tweezers substantially closer to that of optical tweezers.

Original language	English
Article number	154103
Number of pages	4
Journal	Applied Physics Letters
Volume	104
Issue number	15
DOIs	https://doi.org/10.1063/1.4870489
Publication status	Published - 14 Apr 2014

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Cite this

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AU - Wilcox, Paul D.

AU - Cochran, Sandy

AU - Drinkwater, Bruce W.

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Independent trapping and manipulation of microparticles using dexterous acoustic tweezers

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