Motility-Driven Phase Separation of Repulsive Self-Propelled Spheres in 2D

Descriptive Transcript

This video shows a grid, nine boxes high by 11 boxes wide. Each box corresponds to a separate, independent simulation.

The axes labels indicate the Peclet number (Pe = ratio of propulsion velocity to diffusion) and area fraction f corresponding to each simulation.

The simulations in the upper right corner (high area fraction and high propulsion velocity) undergo phase separation into a dilute isotropic gas and a dense crystalline active solid.