Coexistence of solid (purple) and fluid (green) phases in a three-dimensional simulation of active Brownian hard spheres. Selected for a Focus video story in Physics and an Editors’ Suggestion.

From the article:

Phase Diagram of Active Brownian Spheres: Crystallization and the Metastability of Motility-Induced Phase Separation
Ahmad K. Omar, Katherine Klymko, Trevor GrandPre, and Phillip L. Geissler
Phys. Rev. Lett. 126, 188002 (2021)

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