From Collective Motion to Collective Actuation in Populations of Polar Active Units

by Olivier Dauchot,

Gulliver UMR CNRS 7083, ESPCI Paris, Université PSL,

75005 Paris, France



  • Introduction:
    • Different types of active matter: from biology to artificial systems.
    • New macroscopic physics, specific to active matter.
  • Dilute systems:
    • Mechanical pressure is not a state variable.
  • Fluids:
    • Motility Induced Phase Separation (if time).
    • Collective Motion.
  • Dense phases:
    • Towards crystallization.
    • A flowing crystal-
  • Elastic solids:
    • Collective actuation.
  • Conclusion and Perspectives.