Figure 1
From: Defects in bilayer silica and graphene: common trends in diverse hexagonal two-dimensional systems
Atomic structure of the two 2D structures.
(a) Graphene, top-view. (b) Texagonal bilayer silica (HBS), top-view. (c) Graphene, side-view. (d) HBS, side-view. (e) Tetrahedral structural units of the HBS structure.
