Understanding the role of defects in nanoscale patterning in graphene

Graphene’s unique intrinsic properties have been great interests, and atomic scale modification of graphene is expected to control over its properties through geometric and strain effects. The focused beam of a scanning transmission electron microscope (STEM) was used in manipulating graphene atoms in an atomic scale. To understand graphene healing and the diffusion of defects, competing processes in graphene milling, we performed classical molecule dynamics simulations at various temperatures and revealed dynamics of the processes.