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arXiv · 1410.0216

Designing single-beam multitrapping acoustical tweezers

Glauber T. Silva·Andre L. Baggio
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Abstract

The concept of a single-beam acoustical tweezer device which can simultaneously trap microparticles at different points is proposed and demonstrated through computational simulations. The device employs an ultrasound beam produced by a circular focused transducer operating at 1 MHz in water medium. The ultrasound beam exerts a radiation force that may tweeze suspended microparticles in the medium. Simulations show that the acoustical tweezer can simultaneously trap microparticles in the pre-focal zone along the beam axis, i.e. between the transducer surface and its geometric focus. As acoustical tweezers are fast becoming a key instrument in microparticle handling, the development of acoustic multitrapping concept may turn into a useful tool in engineering these devices.

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Glauber T. Silva, Andre L. Baggio. 2014-10-01. Designing single-beam multitrapping acoustical tweezers. https://doi.org/10.1016/j.ultras.2014.09.010

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