Micro-bubbles generated by a single focused optoacoustic wave

Taehwa Lee, Jong G. Ok, Hong Seok Youn, L. Jay Guo, Hyoung Won Baac

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Acoustically generated micro-bubble at solid surface is of paramount importance in applications such as selective surface treatment and controlled permeation of biological samples. However, surface heterogeneity (e.g., micro-sized nucleation sites) poses some challenges in controlling bubble, leading to uncontrolled heterogeneous bubbles. Here, we demonstrate controlled single micro-bubble rather insensitive to surface quality as a result of small focused acoustic spot (∼200 μm) and high-amplitude negative pressure (∼50 MPa) due to acoustic interference.

Original languageEnglish
Title of host publicationIEEE International Ultrasonics Symposium, IUS
PublisherIEEE Computer Society
Pages1041-1044
Number of pages4
ISBN (Electronic)9781479970490
DOIs
StatePublished - 20 Oct 2014
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: 3 Sep 20146 Sep 2014

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Conference

Conference2014 IEEE International Ultrasonics Symposium, IUS 2014
Country/TerritoryUnited States
CityChicago
Period3/09/146/09/14

Keywords

  • acoustic impedance
  • cavitation
  • Focused ultrasound
  • visualization

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