Multiply folded graphene
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- Multiply folded graphene
- Kim, Kwanpyo; Lee, Zonghoon; Malone, Brad D.; Chan, Kevin T.; Aleman, Benjamin; Regan, William; Gannett, Will; Crommie, M. F.; Cohen, Marvin L.; Zettl, A.
- COLLAPSED CARBON NANOTUBES; ELECTRONIC-STRUCTURE; SUSPENDED GRAPHENE; BILAYER GRAPHENE; LAYER GRAPHENE; GRAPHITE; STACKING; SINGLE; SHEETS; ENERGY
- Issue Date
- AMER PHYSICAL SOC
- PHYSICAL REVIEW B, v.83, no.24, pp.1 - 8
- 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 C(60) 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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