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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. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4798584]
Original language | English |
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Article number | 123508 |
Number of pages | 5 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 12 |
DOIs | |
Publication status | Published - 25 Mar 2013 |
Keywords
- RADIATION FORCE
- STANDING WAVES
- CELLS
- PARTICLES
- BEAM
- TRANSDUCER
- SEPARATION
- TWEEZERS
- SPHERE
- DEVICE
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Dive into the research topics of 'Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields'. Together they form a unique fingerprint.Projects
- 1 Finished
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ELECTRONIC SONOTWEEZERS: PARTICLE MANIPULATION WITH ULTRASONIC ARRAYS
Drinkwater, B. W. (Principal Investigator)
1/07/09 → 1/07/13
Project: Research