Acoustic radiation force on micrometer-size particles

K. Yasuda*, T. Kamakura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


The acoustic radiation force on micrometer-sized polystyrene spheres was measured through observation of the sphere movement in a 500 kHz ultrasonic standing wave. The known spatial distribution of the force allowed verification of the correlation between the sphere velocity and the force. It was found that the linear dependency of the force on the cube of the sphere radius, as predicted by Yosioka, began to fail when the sphere radius was below 5 μm. This can be accounted for by the presence of a shell layer surrounding the sphere, which increased the effective radius of the sphere. This may point to applications of the acoustic radiation force in the handling of moicrospheres smaller than hitherto thought possible.

Original languageEnglish
Pages (from-to)1771-1773
Number of pages3
JournalApplied Physics Letters
Issue number13
Publication statusPublished - 1997 Sept 29
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Acoustic radiation force on micrometer-size particles'. Together they form a unique fingerprint.

Cite this