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SUMMARY:Hydro-chemical interactions of swimming droplets - Sébastien Mich
 elin (LadHyX -- Ecole Polytechnique)
DTSTART:20250703T120000Z
DTEND:20250703T130000Z
UID:TALK233959@talks.cam.ac.uk
CONTACT:Anand Srinivasan
DESCRIPTION:Chemically-active droplets have become a truly canonical examp
 le  of active colloids that self-propel in microfluidic systems. Yet they
  remain fascinatingly simple\, often being as simple as oil droplets immer
 sed in an aqueous solution saturated in surfactants. Such self-solubilisin
 g droplets self-propel spontaneously as a result of the non-linear transpo
 rt of surfactant molecules and micellar compounds by the interfacial flows
  induced at their surface by gradients of such species. Many recent experi
 ments have reported the intriguing individual behaviour of these droplets 
 and the onset of propulsion is now relatively well understood conceptually
  and modelled. Yet\, almost all modeling considerations of such fascinatin
 g systems focus exclusively on the case of an isolated self-propelled drop
 let in an unbounded and quiescent fluid. In this presentation\, I will rev
 iew some of the most recent advances regarding these swimmers and how we c
 an go beyond that simple canonical setting to understand these droplets an
 d their interactions\, with neighbors or with nearby boundaries.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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