In this paper, thermal fusion of polymer spherical particles was examined to prepare ring structures on a solid substrate. Polystyrene particles (200nm diameter) were two-dimensionally arrayed by an evaporation-driven method. The self-assembled structures, i.e., two-dimensional colloidal crystals, were kept under 50 degrees C for 20 minutes. Three peeling methods were tried after the thermal fusion treatment: manual peeling, peeling by polydimethylsiloxane adhesion and mechanical peeling. We show that using these peeling methods we were able to obtain the ring structures as well as other interesting structures.