Active versus Passive Hard Disks against a Membrane: Mechanical Pressure and Instability

Author(s): G. Junot, G. Briand, R. Ledesma-Alonso, and O. Dauchot

Experiments show that, unlike an ideal gas, an active-matter system comprised of self-propelled disks does not have a well-defined mechanical pressure.

[Phys. Rev. Lett. 119, 028002] Published Wed Jul 12, 2017