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arXiv · 1305.0580

The Equilibrium Shape of Graphene Domains on Ni(111)

Meifang Li·J. B. Hannon·R. M. Tromp·Jiebing Sun·Junwen Li·V. B. Shenoy·E. Chason
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Abstract

We have determined the equilibrium shape of graphene domains grown on Ni(111) via carbon segregation at 925{\deg}C. In situ, spatially-resolved electron diffraction measurements were used to determine the crystallographic orientation of the edges of the graphene domains. In contrast to recent theoretical predictions of a nearly-circular shape, we show that graphene domains, which nucleate with random shapes, all evolve toward a triangular equilibrium shape with 'zig-zag' edges. Only one of the two possible zig-zag edge orientations is observed.

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Meifang Li, J. B. Hannon, R. M. Tromp, Jiebing Sun, Junwen Li, V. B. Shenoy, E. Chason. 2013-05-02. The Equilibrium Shape of Graphene Domains on Ni(111). https://arxiv.org/abs/1305.0580

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