Acoustic radiation force on a sphere in standing and quasi-standing zero-order Bessel beam tweezers
- Mayo Clinic College of Medicine, Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, 200 First Street SW, Rochester, MN 55905 (United States), E-mail: mitri@ieee.org
Starting from the exact acoustic scattering from a sphere immersed in an ideal fluid and centered along the propagation axis of a standing or quasi-standing zero-order Bessel beam, explicit partial-wave representations for the radiation force are derived. A standing or a quasi-standing acoustic field is the result of propagating two equal or unequal amplitude zero-order Bessel beams, respectively, along the same axis but in opposite sense. The Bessel beam is characterized by the half-cone angle {beta} of its plane wave components, such that {beta} = 0 represents a plane wave. It is assumed here that the half-cone angle {beta} for each of the counter-propagating acoustic Bessel beams is equal. Fluid, elastic and viscoelastic spheres immersed in water are treated as examples. Results indicate the capability of manipulating spherical targets based on their mechanical and acoustical properties. This condition provides an impetus for further designing acoustic tweezers operating with standing or quasi-standing Bessel acoustic waves. Potential applications include particle manipulation in micro-fluidic lab-on-chips as well as in reduced gravity environments.
- OSTI ID:
- 21163711
- Journal Information:
- Annals of Physics (New York), Vol. 323, Issue 7; Other Information: DOI: 10.1016/j.aop.2008.01.011; PII: S0003-4916(08)00008-0; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
- Country of Publication:
- United States
- Language:
- English
Similar Records
Acoustic scattering of a high-order Bessel beam by an elastic sphere
Annular spherically focused ring transducers for improved single-beam acoustical tweezers