Jpn. J. Appl. Phys. 48 (2009) 07GM09 (3 pages) |Previous Article| |Next Article| |Table of Contents|
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Brief Note
Measurement and Numerical Calculation of Force on a Particle in a Strong Acoustic Field Required for Levitation
Teruyuki Kozuka,
Kyuichi Yasui,
Toru Tuziuti,
Atsuya Towata,
Judy Lee, and
Yasuo Iida
National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan
(Received November 19, 2008; accepted March 17, 2009; published online July 21, 2009)
Using a standing-wave field generated between a sound source and a reflector, it is possible to trap small objects at nodes of the sound pressure distribution in air. In this study, a sound field generated under a flat or concave reflector was studied by both experimental measurement and numerical calculation. The calculated result agrees well with the experimental data. The maximum force generated between a sound source of 25.0 mm diameter and a concave reflector is 0.8 mN in the experiment. A steel ball of 2.0 mm in diameter was levitated in the sound field in air.
URL:
http://jjap.jsap.jp/link?JJAP/48/07GM09/
DOI: 10.1143/JJAP.48.07GM09
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