(a1) The free energy F, (a2) the interfacial energy U, (a3) the amphiphile entropy S_a, and (a4) the solvent entropy S_s as functions of the side length L, for amphiphiles (20/80) with f = 0.18. The marks from panels (b1)–(b8) denote the 8 specific morphologies of the system, whose different structures have been shown in panels (b1)–(b8). The density distributions of the head parts of the amphiphiles, ϕ_h, are sequentially shown in panels (b1)–(b8), which correspond to the 8 states marked in the energy curves of the left column. The white squares schematically denote the square-shaped particles with different sizes.