fig1

Figure 1. (A) Schematic illustration of the fabrication process of 3DOM CaTiO₃-Au, SEM images of (B) assembled polystyrene spheres; (C) 3DOM CaTiO₃ with low resolution; (D) 3DOM CaTiO₃ with high resolution; (E) and (F) Low-resolution TEM images of 3DOM CaTiO₃-Au; (G) high-resolution TEM image of 3DOM CaTiO₃-Au.