9B-1 Coupled Dynamics of an Isolated UCA Microbubble Pair

Author

Garbin, V. ; Dollet, B. ; Overvelde, M.L.J. ; de Jong, N. ; Lohse, D. ; Versluis, M. ; Cojoc, D. ; Ferrari, E. ; Fabrizio, E. Di

Author_Institution

Univ. of Twente, Enschede

fYear

2007

fDate

28-31 Oct. 2007

Firstpage

757

Lastpage

760

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.

Keywords

acoustic materials; bubbles; cameras; drag; high-speed optical techniques; radiation pressure; Bjerknes force; Stokes drag; acoustic radiation pressure; bubble-bubble interaction; isolated UCA microbubble coupled dynamics; optical tweezers; oscillating microbubble; time-resolved optical measurements; translating microbubble; ultra-high speed camera Brandaris 128; ultrasound contrast agent; viscous drag; Acoustic beams; Charge carrier processes; Charge coupled devices; Charge-coupled image sensors; Fluid dynamics; Friction; Laser beams; Optical microscopy; Optical recording; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2007. IEEE

Conference_Location

New York, NY

ISSN

1051-0117

Print_ISBN

978-1-4244-1384-3

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2007.194

Filename

4409767