| AVS 60th International Symposium and Exhibition | |
| Surface Science | Monday Sessions |
| Session SS+AS+NS-MoM |
| Session: | Nanostructures: Growth & Characterization |
| Presenter: | D. Teng, Georgia Institute of Technology |
| Authors: | D. Teng, Georgia Institute of Technology D. Sholl, Georgia Institute of Technology B. Habenicht, Oak Ridge National Laboratory L. Semidey-Flecha, Oak Ridge National Laboratory Y. Xu, Oak Ridge National Laboratory |
| Correspondent: | Click to Email |
Stable metal nanoparticles grown on metal-supported graphene can in some circumstances form a periodic array and have potential applications in fields such as catalysis and nano-electronics. To understand their formation mechanism, we studied the adsorption and diffusion of monomers, dimers, and trimers of Rh and Au on graphene/Ru(0001) using Density Functional Theory (DFT). These two metal species exhibit distinct behaviors in cluster formation on graphene/Ru(0001). We determined the global minimum structure of Au8 cluster on graphene/Ru(0001) using genetic algorithm. Our results on adsorption and diffusion of small metal clusters Mn (n=1, 2, 3) and Au8 have given us insights into the nucleation process of metal clusters on graphene moiré and aid us on building a general model to describe the cluster growth mechanism on graphene moiré, which will provide guidance on designing supported sintering-resistant nanoclusters.