The density distributions of the head part, ϕ_h, of the (40/60) amphiphiles, corresponding to different side lengths L ((a) L = 32, (b) L = 44, and (c) L = 48) in Fig. 1(c). All the figures are for the fixed volume fraction of copolymer f = 0.26. The white squares schematically denote the square-shaped particles with different sizes.