Fig. 3: Colloidal clusters enclosed in a vesicle.
From: A colloidal viewpoint on the sausage catastrophe and the finite sphere packing problem

a Packing fraction ηch of clusters composed of particles in the hard-sphere limit whose initial configurations were taken from simulations (sim, triangles) and from a database (db, circles), plotted as a function of the number of particles N. The packing fraction of the ideal linear conformation ηlin(N) is depicted as an orange line (lin), along with the packing fraction of icosahedra (ico, stars). The inset snapshot displays the N = 38 cluster obtained from the database. b Bond-order parameter q6 as a function of N for the clusters as obtained from simulations and the database, as shown in (a).