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SUMMARY:The ubiquitous acoustic bubble: a brief introduction - Professor R
 onald Roy (University of Oxford)
DTSTART:20230217T124500Z
DTEND:20230217T134500Z
UID:TALK180386@talks.cam.ac.uk
CONTACT:Nirmani Rathnayake
DESCRIPTION:There are few objects in nature that interact with acoustic wa
 ves as effectively and efficiently as a gas bubble in a liquid. The veloci
 ty\, intensity and even frequency content of sound waves are profoundly im
 pacted by bubbles in suspension\, and when high-pressure waves travel thro
 ugh a liquid medium\, they nucleate small gas bubbles that subsequently re
 spond to period acoustic forcing\, a process known as acoustic cavitation.
  Cavitation bubbles convert acoustical energy to mechanical energy that is
  highly concentrated in both space and time. The result is a plethora of m
 echanical\, and thermal effects\, ranging from acoustic micro-streaming to
  extreme conditions at the point of cavity collapse. All of these effects 
 play a role\, to varying degrees\, in a broad range of industrial and biom
 edical procedures involving ultrasound. In this talk\, we present an intro
 ductory overview of the relevant bubble physics\, physical effects\, and t
 he roles – both beneficial and detrimental – played by bubbles and cav
 itation in industrial and medical acoustics.
LOCATION:LR5
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