Multiply folded graphene

Kwanpyo Kim, Zonghoon Lee, Brad D. Malone, Kevin T. Chan, Benjamín Alemán, William Regan, Will Gannett, M. F. Crommie, Marvin L. Cohen, A. Zettl

Research output: Contribution to journalArticlepeer-review

127 Citations (Scopus)


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.

Original languageEnglish
Article number245433
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
Publication statusPublished - 2011 Jun 27

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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