Figure 2

SCB@SA SEM images at different magnifications (a) ×100, (b) ×250, (c) ×500, and (d) SCB@SA TEM images at different scales.

SCB@SA SEM images at different magnifications (a) ×100, (b) ×250, (c) ×500, and (d) SCB@SA TEM images at different scales.