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SUMMARY: The fluid dynamics of disease transmission: bubbles\, droplets\, 
 and microorganisms (GK Batchelor Lecture) - Lydia Bourouiba\, Massachusett
 s Institute of Technology
DTSTART:20230526T150000Z
DTEND:20230526T160000Z
UID:TALK200752@talks.cam.ac.uk
CONTACT:Prof. Jerome Neufeld
DESCRIPTION:The fundamental mechanisms governing disease transmission of a
 nd contamination by most pathogens remain poorly understood. This is parti
 cularly true for respiratory infections\, but also for many other diseases
 \, including those involving contamination from water bodies to the air we
  breathe. Fluid processes and physical laws at various scales\, combined w
 ith biological and physiological processes\, are key in filling this gap. 
 Bubbles\, in particular\,  reside at the water surface before bursting\, e
 mitting droplets that can contain chemicals and pathogens linked to diseas
 e and contamination.  An understanding of these contaminant-laden droplet 
 emissions starts by elucidating the physics of dynamically thinning bubble
  films. We first focus on clean bubbles and show how a large class of Mara
 ngoni flow-inducing effects fundamentally change their thinning dynamics a
 nd\, in doing so\, can dramatically enhance the bubble lifetime. We also d
 iscuss how microorganisms can manipulate the aging physics of surface bubb
 les to enhance their own water-to-air dispersal.
LOCATION:MR2
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