The Mechanics of Active Matter

by Prof. John F Brady (Caltech)

Tuesday 22 Sept 2020, 17:00 → 18:30 Europe/Stockholm

Nordita

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https://stockholmuniversity.zoom.us/j/622224375

Meeting ID: 622 224 375
 

 Abstract: A distinguishing feature of many living systems is their ability to move – to be
active. Through their motion living systems are able self-assemble: birds flock, fish
school, bacteria swarm, etc. But such behavior is not limited to living systems. Recent
advances in colloid chemistry have led to the development of synthetic, nonliving
particles that are able to undergo autonomous motion by converting chemical energy into
mechanical motion and work. This intrinsic activity imparts new behaviors to active
matter that distinguish it from equilibrium systems. Active matter generates its own
internal stress, which can drive it far from equilibrium, and by so doing active matter can
control and direct its own behavior and that of its surroundings. In this talk I will discuss
our recent work on active matter and on the origin of a new source of stress that is
responsible for self-assembly and pattern formation in active matter systems. The role of
confinement and flow on active systems will be discussed.