Interaction between single gold atom and the graphene edge: A study via aberration-corrected transmission electron microscopy
KAUST DepartmentImaging and Characterization Core Lab
Physical Sciences and Engineering (PSE) Division
Advanced Nanofabrication, Imaging and Characterization Core Lab
Materials Science and Engineering Program
Computational Physics and Materials Science (CPMS)
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AbstractInteraction 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. © 2012 The Royal Society of Chemistry.
SponsorsH.-T. Wang and W. Yang acknowledge the financial support from the National Science Foundation of China (Grant No. 10832009; Grant No. 11090333) and Science Foundation of Chinese University (Grant No. 2011QNA4038).
PublisherRoyal Society of Chemistry (RSC)