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Radiation force on a spherical object in the field of a focused cylindrical transducer.

Authors
Type
Published Article
Journal
The Journal of the Acoustical Society of America
0001-4966
Publisher
Acoustical Society of America
Publication Date
Volume
101
Issue
5 Pt 1
Pages
2443–2447
Identifiers
PMID: 9165724
Source
Medline
License
Unknown

Abstract

An exact solution of the radiation force on a spherical object, when positioned on the acoustic axis of a cylindrical transducer, is provided. The solution is valid for any type of sphere of any size. The radiation force function allows the calibration of high-frequency focused ultrasound fields from radiation force measurements and expands the utility of the elastic sphere radiometer developed by Dunn et al. [Acustica 38, 58-61 (1977)]. Numeral results reveal an oscillatory behavior of the radiation force function for small spheres near the transducer surface and this behavior may present an opportunity for particle sorting based on the mechanical properties of the particle and other types of manipulation.

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