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McMaster University

Departmental Colloquium

SPEAKER Prof. Cristina Marchetti Syracuse University
TOPIC Active Matter: from colloids to living cells 

Collections of self-propelled entities, from living cells to engineered microswimmers, organize in a rich variety of active fluid and solid states, with unusual properties. For instance, active fluids can flow with no externally applied driving forces and active gases do not fill their container. In this talk I will describe the behavior of such “active materials”, focusing on two examples of liquid-solid transitions driven by active processes. The first is the formation of cohesive matter with no cohesive forces in collections of purely repulsive active colloids. The second example is motivated by the experimental observation of glassy dynamics in epithelial tissues. I will describe a new theoretical model that captures this behavior by predicting a liquid-solid transition that occurs at constant density as a function of cell properties, such as motility, contractility, and cell-cell adhesion.
DATE Wednesday, March 22, 2017
TIME 3:30 pm
PLACE ABB 102
  Coffee will be served at 3:10 pm (ABB 273 lounge)
HOST Kari Dalnoki-Veress  [Email:dalnoki@mcmaster.ca, Phone: (905)525-9140 ext 22658 ]

For more information phone 905-529-7070 X24559 or Email the Department of Physics and Astronomy


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