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. 2021 Oct 12;11(1):2101834. doi: 10.1002/adhm.202101834

Figure 2.

Figure 2

a) Lattice parameters and arrangement of graphene stacking in multi‐layer graphene. b) Surface groups attached to the graphene sheets in graphene oxide. c) TEM image of CNTs, showing tubular structure of MWCNTs. Reproduced with permission.[ 32 ]Copyright 1991, Springer Nature. d) TEM image of amorphous carbon, showing disordered and short‐range order in the microstructure. e) TEM micrograph of glassy carbon, showing turbostratic arrangement of long‐range graphitic planes. Reproduced with permission.[ 41 ] Copyright 2018, Springer Nature. f) TEM image of carbon quantum dots, showing nanometric particle size. Inset shows crystalline arrangement of multiple graphene planes in an individual CQD. Reproduced with permission.[ 43 ] Copyright 2019, Springer Nature. g) Comparison of strength and Young's modulus of carbon materials, illustrating the bio‐mechanical versatility of the carbon‐based solutions in comparison to other standard solutions.