Softened elastic response and unzipping in chemical vapor deposition graphene membranes

Carlos S. Ruiz-Vargas, Houlong L. Zhuang, Pinshane Y. Huang, Arend M. Van Der Zande, Shivank Garg, Paul L. McEuen, David A. Muller, Richard G. Hennig, Jiwoong Park

Research output: Contribution to journalArticle

247 Scopus citations

Abstract

We use atomic force microscopy to image grain boundaries and ripples in graphene membranes obtained by chemical vapor deposition. Nanoindentation measurements reveal that out-of-plane ripples effectively soften graphene's in-plane stiffness. Furthermore, grain boundaries significantly decrease the breaking strength of these membranes. Molecular dynamics simulations reveal that grain boundaries are especially weakening when subnanometer voids are present in the lattice. Finally, we demonstrate that two graphene membranes brought together form membranes with higher resistance to breaking.

Original languageEnglish (US)
Pages (from-to)2259-2263
Number of pages5
JournalNano Letters
Volume11
Issue number6
DOIs
StatePublished - Jun 8 2011
Externally publishedYes

Keywords

  • AFM
  • CVD
  • Graphene
  • grain boundaries
  • membranes
  • molecular dynamics simulations

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Ruiz-Vargas, C. S., Zhuang, H. L., Huang, P. Y., Van Der Zande, A. M., Garg, S., McEuen, P. L., Muller, D. A., Hennig, R. G., & Park, J. (2011). Softened elastic response and unzipping in chemical vapor deposition graphene membranes. Nano Letters, 11(6), 2259-2263. https://doi.org/10.1021/nl200429f