Figure 2. The evolution of nanopores in GNMs.
(a–h) AFM images of GNM-4 (a, e); GNM-6 (b, f), GNM-9 (c, g) and GNM-11 (d, h); (a–d) scale bar = 2 μm and (e–h) scale bar = 1 μm.
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