title: Interaction between single gold atom and the graphene edge: a study via aberration-corrected transmission electron microscopy.
abstract: Interaction between single noble metal atoms and graphene edges has been investigated via aberration-corrected and monochromated transmission electron microscopy. A collective motion of the Au atom and the nearby carbon atoms is observed in transition between energy-favorable configurations. Most trapping and detrapping processes are assisted by the dangling carbon atoms, which are more susceptible to knock-on displacements by electron irradiation. Thermal energy is lower than the activation barriers in transition among different energy-favorable configurations, which suggests electron-beam irradiation can be an efficient way of engineering the graphene edge with metal atoms.
authors.affiliation: Institute of Applied Mechanics, Zhejiang University, Hangzhou 310027, China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Wang
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.forename: Yingchun
authors.initials: Y
authors.lastname: Cheng
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Wang
authors.forename: Yingbang
authors.initials: Y
authors.lastname: Yao
authors.forename: Udo
authors.initials: U
authors.lastname: Schwingenschlögl
authors.forename: Xixiang
authors.initials: X
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Yang