功能化石墨烯材料:定义、分类及制备策略
马英杰, 智林杰

Functionalized Graphene Materials: Definition, Classification, and Preparation Strategies
Yingjie Ma, Linjie Zhi
Fig 5 Illustration of (A) zigzag and armchair edges, (B) monovacancy (the dangling s bonds are shown), and (C) local structure (the dashed lines represent overlap between pz orbitals) of a curved graphene sheet.
Adapted from Royal Society of Chemistry publisher 74.