Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4798584
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Funding
- Engineering and Physical Science Research Council, UK through the Electronic Sonotweezers programme
- EPSRC [EP/G01213X/1, EP/G012067/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G012067/1, EP/G01213X/1] Funding Source: researchfish
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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. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4798584]
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