https://doi.org/10.1140/epje/i2009-10449-y
Regular Article
Acoustic radiation force on an air bubble and soft fluid spheres in ideal liquids: Example of a high-order Bessel beam of quasi-standing waves
Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, Mayo Clinic, College of Medicine, 200 First Street SW, 55905, Rochester, MN, USA
* e-mail: mitri@ieee.org
Received:
16
January
2009
Revised:
19
February
2009
Accepted:
2
March
2009
Published online:
1
May
2009
The partial wave series for the scattering of a high-order Bessel beam (HOBB) of acoustic quasi-standing waves by an air bubble and fluid spheres immersed in water and centered on the axis of the beam is applied to the calculation of the acoustic radiation force. A HOBB refers to a type of beam having an axial amplitude null and an azimuthal phase gradient. Radiation force examples obtained through numerical evaluation of the radiation force function are computed for an air bubble, a hexane, a red blood and mercury fluid spheres in water. The examples were selected to illustrate conditions having progressive, standing and quasi-standing waves with appropriate selection of the waves’ amplitude ratio. An especially noteworthy result is the lack of a specific vibrational mode contribution to the radiation force determined by appropriate selection of the HOBB parameters.
PACS: 43.20.-f General linear acoustics – / 43.25.-x Nonlinear acoustics – / 43.25.Qp Radiation pressure – / 43.25.Uv Acoustic levitation –
© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2009
