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. Author manuscript; available in PMC: 2019 Sep 13.
Published in final edited form as: Nanoscale. 2018 Sep 13;10(35):16795–16804. doi: 10.1039/c8nr04434a

Figure 2.

Figure 2.

SEM images of NSHGMS. The surface of HGMS was covered by SiO2 NPs with various sizes using LbL assembly process. (a) no SiO2, (b) 20 nm, (c) 40 nm, (d) 80 nm, (e) 120 nm and (f) 200 nm. The scale bar is 10 µm in the first and third rows, and 500 nm in the second and forth rows.