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Lee, Zonghoon
Atomic-Scale Electron Microscopy (ASEM) Lab
Research Interests
  • Advanced Transmission Electron Microscopy (TEM/STEM), in Situ TEM, graphene, 2D materials, low-dimensional crystals, nanostructured materials

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Multiply folded graphene

Cited 103 times inthomson ciCited 68 times inthomson ci
Title
Multiply folded graphene
Author
Kim, KwanpyoLee, ZonghoonMalone, Brad D.Chan, Kevin T.Aleman, BenjaminRegan, WilliamGannett, WillCrommie, M. F.Cohen, Marvin L.Zettl, A.
Keywords
COLLAPSED CARBON NANOTUBES; ELECTRONIC-STRUCTURE; SUSPENDED GRAPHENE; BILAYER GRAPHENE; LAYER GRAPHENE; GRAPHITE; STACKING; SINGLE; SHEETS; ENERGY
Issue Date
2011-06
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.83, no.24, pp.1 - 8
Abstract
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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DOI
10.1103/PhysRevB.83.245433
ISSN
2469-9950
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