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. Author manuscript; available in PMC: 2014 Jul 15.
Published in final edited form as: Phys Chem Chem Phys. 2013 Aug 21;15(31):12785–12799. doi: 10.1039/c3cp51901e

Fig. 2.

Fig. 2

Transmission Electron Microscopy (TEM) of graphene-encapsulated nanoparticles and graphene–nanoparticle composite structures. (a, b) TEM images of GO–gold nanoparticle sheets at different magnifications. Inset of (b) is a high-resolution TEM of a single gold nanoparticle. Reproduced from ref. 40 with permission from ACS. (c) Negatively charged GO sheets can self-assemble on positive nanoparticles such as SiO2. (d) TEM of GO-encapsulated SiO2 nanoparticles. Reproduced from ref. 57 with permission from Wiley.