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SUMMARY:Single-particle and collective dynamics in arrested phase-separati
 ng glassy mixtures - Vittoria Sposini\, University of Padova
DTSTART:20260309T143000Z
DTEND:20260309T150000Z
UID:TALK243655@talks.cam.ac.uk
CONTACT:Isaac Parker
DESCRIPTION:In this seminar\, I discuss the structure and dynamics of a ha
 rd colloid–star polymer mixture in the protein limit\, where the hard co
 mponent is smaller than the soft one. Soft–hard mixtures exhibit rich dy
 namical behavior governed by parameters such as the concentrations of the 
 two components\, interaction softness\, and size ratio. I focus on the reg
 ime of arrested phase separation\, where an incipient demixing transition 
 competes with a nearby vitrification line. Using coarse-grained molecular 
 dynamics simulations\, I characterize both single-particle and collective 
 dynamics of the hard colloidal tracers within the soft glassy matrix. I sh
 ow that arrested phase separation induces population splitting and a decou
 pling between self and collective dynamics of the hard colloids. Overall\,
  the interplay between glassiness and arrested phase separation gives rise
  to complex\, multiscale dynamical phenomena that strongly affect the moti
 on of hard additives in the arrested soft matrix.\nReference: K. Moser\, C
 .N. Likos\, V. Sposini\, arXiv:2601.07625 (2026). \n
LOCATION:https://zoom.us/j/92447982065?pwd=RkhaYkM5VTZPZ3pYSHptUXlRSkppQT0
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