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SUMMARY:Bubble dynamics in complex fluids - Professor Valeria Garbin\, Del
 ft University of Technology
DTSTART:20250207T160000Z
DTEND:20250207T170000Z
UID:TALK227011@talks.cam.ac.uk
CONTACT:Professor Grae Worster
DESCRIPTION:Bubble dynamics and cavitation have traditionally been studied
  in the context of underwater acoustics and\, more recently\, biomedical a
 pplications. I will discuss how the deformation and flow fields generated 
 by acoustically-driven bubbles can be used to drive self-assembly of novel
  microstructures in complex fluids. Bubble dynamics driven at ultrasonic f
 requencies probe time scales as short as \n10ˉ³−10ˉ⁶ s\, comparable
  to the smallest relaxation time scales for complex fluids containing susp
 ended particles or macromolecules. I will describe how\, in this dynamical
  regime\, dynamic capillary interactions arise between colloidal particles
  adsorbed at a fluid interface\, producing particle networks that dominate
  the mechanics of these complex interfaces under flow. I will also describ
 e a new flow-induced mechanism caused by bubble dynamics\, that produces o
 rdered microstructures in colloidal gels. This mechanism can enable energy
 -efficient processing methods of colloidal-gel materials\, including inks\
 , battery electrodes\, construction materials. I will also discuss the eme
 rging approach of using bubble dynamics to probe the high-frequency viscoe
 lastic properties of complex fluids and soft materials\, which has brought
  together the communities of cavitation and rheology to address new challe
 nges in characterization of soft materials.\n\nCassyni Link below:\n\nhttp
 s://cassyni.com/events/AyG2QQDJ3FQqksbaTP2zAh\n\n
LOCATION:Fluid Mechanics Webinar Series
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