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SUMMARY:Pulsating active matter - Etienne Fodor\, Univ. Luxembourg
DTSTART:20220607T120000Z
DTEND:20220607T130000Z
UID:TALK170753@talks.cam.ac.uk
CONTACT:Camille Scalliet
DESCRIPTION:Zoom-only seminar\n\nActive systems are made of interacting un
 its converting an energy source into sustained dynamics\, yielding emergen
 t states without any equilibrium equivalent. In assemblies of self-propell
 ed particles\, such as motile bacteria\, activity drives individual displa
 cement. In dense biological tissues\, where crowding hinders motion\, acti
 vity instead mostly drives individual pulsation\, namely periodic change i
 n size. We examine active systems where the competition between pulsation\
 , synchronisation\, and steric hindrance triggers wave propagation without
  migration: Particle size undergoes collective oscillations with only negl
 igible particle displacement. This instability leads to a plethora of dyna
 mical patterns akin to reaction-diffusion dynamics\, suggesting that pulsa
 ting active matter captures the same Physics despite the absence of any re
 action.
LOCATION:Zoom link: https://maths-cam-ac-uk.zoom.us/j/98016675669
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