Multiply Folded Graphene

Details Multiply Folded Graphene Multiply Folded Graphene

2010-12-24

arxiv.org/abs/1012.5426v2

Phys. Rev. B 83, 245433 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

29 pages, 10 figures (accepted in Phys. Rev. B)

Scientific paper

10.1103/PhysRevB.83.245433

The folding of paper, hide, and woven fabric has been used for millennia to achieve enhanced articulation, curvature, and visual appeal for intrinsically flat, two-dimensional materials. For graphene, an ideal two-dimensional material, folding may transform it to complex shapes with new and distinct properties. Here, we present experimental results that folded structures in graphene, termed grafold, exist, and their formations can be controlled by introducing anisotropic surface curvature during graphene synthesis or transfer processes. Using pseudopotential-density functional theory calculations, we also show that double folding modifies the electronic band structure of graphene. Furthermore, we demonstrate the intercalation of C60 into the grafolds. Intercalation or functionalization of the chemically reactive folds further expands grafold's mechanical, chemical, optical, and electronic diversity.

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