Cavitation detection with subharmonic emissions by low intensity sustaining ultrasound

Shin Yoshizawa, Shinichiro Umemura

Research output: Contribution to journalConference articlepeer-review

Abstract

Control of acoustic cavitation by ultrasound pulse has been investigated recently. Cavitation detection is an factor for the cavitation control. In this study, detection which has been used to detect the acoustic in continuous sonication is applied to pulsed sequence using low intensity sustaining ultrasound. sustaining ultrasound follows just after the high intensity pulse. The power of the sustaining ultrasound is low to avoid cavitation inception by itself. When the microbubbles are generated and grow to the certain by the high intensity pulsed ultrasound, the sustaining prevents the dissolution due to rectified diffusion. , the bubbles can grow enough to emit subharmonic pressure. With this method, the cavitation generated by pulsed ultrasound was clearly detected.

Original languageEnglish
Article number4803608
Pages (from-to)772-775
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 IEEE International Ultrasonics Symposium, IUS 2008 - Beijing, China
Duration: 2008 Nov 22008 Nov 5

Keywords

  • Acoustic cavitation
  • Cavitation detection
  • Microbubbles
  • Pulsed HIFU
  • Subharmonic

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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