Figure 2
From: Defects in bilayer silica and graphene: common trends in diverse hexagonal two-dimensional systems
Stone-Wales transformation in hexagonal bilayer silica.
(a) The pristine lattice is transformed (b) by means of rotation of a pair of structural units into (c) the final Stone-Wales defect. Note that this is a schematic illustration to visualise the transition between the initial and final topologies and that (b) does not necessarily represent an actual intermediate state.
