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. 2015 Apr 13;9(4):3428–3435. doi: 10.1021/acsnano.5b01762

Figure 2.

Figure 2

(a–f) Topological defects in graphene. (a,b) 5 ring and 7 ring disclinations, (c) 5–7 dislocation, (d) grain boundary with θ = 32.3° misorientation angle. Reprinted with permission from ref (16). Copyright 2014 Nature Publishing Group. (e) Aberration-corrected annular dark-field scanning transmission electron microscopy (STEM) of a grain boundary with θ = 27° misorientation angle. Scale bar is 0.5 nm. Reprinted with permission from ref (28). Copyright 2011 Nature Publishing Group. (f) Scanning transmission microscopy image of a 0° grain boundary, formed by 5 and 8 carbon atom rings. Reprinted with permission from ref (5). Copyright 2010 Nature Publishing Group. (g) Zigzag and armchair edges in monolayer graphene nanoribbons. Reprinted with permission from ref (20). Copyright 2010 Royal Society of Chemistry. (h) Atomic-resolution STM image of graphene edge structure on the sloped sidewall of SiC. Reprinted with permission from ref (19). Copyright 2014 Nature Publishing Group.