Characterization of individual submicron perfluorocarbon gas bubbles by ultrasonic backscatter | Zendy

E. Carr Everbach | Zendy; Damir B. Khismatullin | Zendy; John T. Flaherty | Zendy; Ronald A. Roy | Zendy

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Characterization of individual submicron perfluorocarbon gas bubbles by ultrasonic backscatter

Author(s) -

E. Carr Everbach,

Damir B. Khismatullin,

John T. Flaherty,

Ronald A. Roy

Publication year - 2005

Publication title -

acoustics research letters online

Language(s) - English

Resource type - Journals

ISSN - 1529-7853

DOI - 10.1121/1.1901743

Subject(s) - backscatter (email) , materials science , scattering , radius , polystyrene , microsecond , ultrasonic sensor , characterization (materials science) , optics , population , composite material , acoustics , physics , nanotechnology , telecommunications , computer security , computer science , wireless , polymer , demography , sociology

Measurements were undertaken to determine the unknown microbubble-size distribution of a dodecafluoropentane (DDFP) emulsion consisting of 10(12) droplets/ml in surfactant-stabilized water. The acoustic backscatter of 2-microsecond-duration tonebursts of 30-MHz focused ultrasound was measured from the emulsion as it moved in a coaxial flow. Calibration for the system was accomplished using 3-mu m-radius polystyrene spheres, using a linear scattering model and literature values for polystyrene. Applying viscous linear scattering theory to the backscatter data from individual DDFP bubbles allowed inversion of the radius-backscatter relation. A mean microbubble radius of 130 nm was inferred for the DDFP population. (C) 2005 Acoustical Society of America.

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