Fig. 2: Phase diagram over the area fraction ϕ and activity Pe of phoretic disks.
From: Shaping active matter from crystalline solids to active turbulence
The disks form crystalline solids (hexagon), liquids (star), or gas-like phases consisting of four classes: no pattern (circle); single stable chain (square); dynamic chaining (diamond); and self-organized coherent flows (triangle). Symbols are colored by the time-averaged RMS velocity \(\overline{{U}_{{{{{{{{\rm{rms}}}}}}}}}}\) of disks. The solid curve represents the theoretical prediction Eq. (2) of the solid-liquid transition, where \({{{{{{{\mathcal{C}}}}}}}}\) denotes a fitting parameter. The dashed box encloses the three phases showcased in Fig. 1.
