Continuity of Graphene on Polycrystalline Copper
Nano Letters2010Vol. 11(1), pp. 251–256
Citations Over TimeTop 1% of 2010 papers
Haider I. Rasool, Emil B. Song, Matthew J. Allen, Jonathan K. Wassei, Richard B. Kaner, Kang L. Wang, Bruce H. Weiller, James K. Gimzewski
Abstract
The atomic structure of graphene on polycrystalline copper substrates has been studied using scanning tunneling microscopy. The graphene overlayer maintains a continuous pristine atomic structure over atomically flat planes, monatomic steps, edges, and vertices of the copper surface. We find that facets of different identities are overgrown with graphene's perfect carbon honeycomb lattice. Our observations suggest that growth models including a stagnant catalytic surface do not apply to graphene growth on copper. Contrary to current expectations, these results reveal that the growth of macroscopic pristine graphene is not limited by the underlying copper structure.
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