The phase diagrams for copolymer with respect to volume fraction f and side length L of the square-shaped particles. The three phase figures are for copolymers (a): 20/80, (b) 30/70, and (c) 40/60. Four phase regions are shown by (i) red filled circles (denoting vesicles with particles in the core), (ii) blue filled circles (denoting combined structures with outer monolayer and inner inverted micelle pieces), (iii) hollow circles (denoting micelles with particles in the core), and (iv) blue filled squares (denoting micelle pieces). They represent four different morphologies in panel (d), respectively.