Formation of atomic nanoclusters on graphene sheets

Details Formation of atomic nanoclusters on graphene sheets Formation of atomic nanoclusters on graphene sheets

2008-10-19

arxiv.org/abs/0810.3385v2

Nanotechnology 20, 135602 (2009)

Physics

Condensed Matter

Materials Science

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Scientific paper

10.1088/0957-4484/20/13/135602

The formation of atomic nanoclusters on suspended graphene sheets have been investigated by employing a Molecular dynamics simulation at finite temperature. Our systematic study is based on temperature dependent Molecular dynamics simulations of some transition and alkali atoms on suspended graphene sheets. We find that the transition atoms aggregate and make various size nanoclusters distributed randomly on graphene surface. We also report that most alkali atoms make one atomic layer on graphene sheets. Interestingly, the potassium atoms almost deposit regularly on the surface at low temperature. We expect from this behavior that the electrical conductivity of a suspended graphene doped by potassium atoms would be much higher than the case doped by the other atoms at low temperature.

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