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SUMMARY:Splitting and self-propelling active droplets - Rajesh Singh\, DAM
 TP
DTSTART:20200218T130000Z
DTEND:20200218T140000Z
UID:TALK136438@talks.cam.ac.uk
CONTACT:Etienne Fodor
DESCRIPTION:Starting from a scalar field theory with mass and momentum con
 servation (model H)\, splitting and self-propulsion of droplets will be de
 scribed in this talk when terms\, which do not respect the time-reversal s
 ymmetry\, are added to the model H. A self-shearing instability is obtaine
 d if active contractile stress is added to the momentum conservation equat
 ion. This instability interrupts the growth of droplets by splitting them.
  The contractile active stress has the effect of reversing the sign of the
  effective tension which arrests the growth. In the second part of the tal
 k\, a mechanism to obtain self-propulsion of active droplets by modifying 
 the model H will be described. These results will be used to rationalize r
 ecent experiments in active matter.  
LOCATION:MR11\, CMS
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