Extended Data Fig. 2: Clusters with and without stuck particles.
From: Active phase separation by turning towards regions of higher density

a, A bright field microscopy image of active phase separation in a late stage with yellow stars labelling particles that, stuck to the coverslip, remain in the same location throughout the experiment. b, The number (magenta) and fraction (blue) of clusters with and without (solid and dotted curves, respectively) at least one stuck particle. In the beginning of the experiment, more clusters are formed without than with stuck particles. With elapsed time, the number of clusters forming both with and without stuck particles decreases (magenta), but clusters with stuck particles become the most abundant.