Figure 8

Contact mode AFM images and height profile of: (a) GO with sharp edges and flat surfaces; the thickness range is 0.6–10 nm, and (b) GO-CS with coarse edges and protrusions on its surface; the thickness range is 10–25 nm.

Contact mode AFM images and height profile of: (a) GO with sharp edges and flat surfaces; the thickness range is 0.6–10 nm, and (b) GO-CS with coarse edges and protrusions on its surface; the thickness range is 10–25 nm.