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. 2019 Oct 4;19(19):4297. doi: 10.3390/s19194297

Figure 2.

Figure 2

SEM image of the graphene sample—scale bar 600 nm (a); TEM image of the sample, revealing few- and multi-layer graphene—scale bar 600 nm (b); HR-TEM image of the edge of multi-layer graphene—scale bar 10 nm (c).