Fig. 4: Trains statistics.
Experimental probabilities of the train size in the adsorption layer P(n) for different activities Pes. Two colloids form a pair if the distance between the centers is below 1.9 μm ≈ 2.4R. Dotted lines represent a geometric law fit to the data (See Methods). Inset: Snapshot of active Janus colloids sticking to the wall and forming trains on both sides of the wall.
