Coupled dynamics of an isolated UCA microbubble pair

Garbin, V. and Dollet, B. and Overvelde, M. L. J. and de Jong, N. and Lohse, D. and Versluis, M and Cojoc, D. and Ferrari, Enrico and Di Fabrizio, E. (2007) Coupled dynamics of an isolated UCA microbubble pair. In: IEEE Ultrasonics Symposium, 2007, 28-31 October 2007, New York, USA.

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Abstract

We present time-resolved optical measurements of the coupled dynamics of two UCA microbubbles in ultrasound. We isolate microbubble pairs using optical tweezers to move them away from confining walls and study purely the bubble-bubble interaction. The dynamics in ultrasound is recorded optically using the ultra-high speed camera Brandaris 128. Our measurements indicate that the viscous drag on a translating and oscillating microbubble is not accounted for with enough accuracy by existing models using the elementary form of Stokes drag.

Item Type:Conference or Workshop Item (Paper)
Additional Information:We present time-resolved optical measurements of the coupled dynamics of two UCA microbubbles in ultrasound. We isolate microbubble pairs using optical tweezers to move them away from confining walls and study purely the bubble-bubble interaction. The dynamics in ultrasound is recorded optically using the ultra-high speed camera Brandaris 128. Our measurements indicate that the viscous drag on a translating and oscillating microbubble is not accounted for with enough accuracy by existing models using the elementary form of Stokes drag.
Keywords:secondary Bjerknes force, UCA, microbubbles, acoustic radiation pressure, optical tweezers
Subjects:F Physical Sciences > F310 Applied Physics
F Physical Sciences > F361 Laser Physics
F Physical Sciences > F380 Acoustics
Divisions:College of Science > School of Life Sciences
ID Code:6976
Deposited By: Enrico Ferrari
Deposited On:27 Nov 2012 20:01
Last Modified:27 Nov 2012 20:01

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