Large physisorption strain in chemical vapor deposition of graphene on copper substrates

Rui He, Liuyan Zhao, Nicholas Petrone, Keun Soo Kim, Michael Roth, James Hone, Philip Kim, Abhay Pasupathy, Aron Pinczuk

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Graphene single layers grown by chemical vapor deposition on single crystal Cu substrates are subject to nonuniform physisorption strains that depend on the orientation of the Cu surface. The strains are revealed in Raman spectra and quantitatively interpreted by molecular dynamics (MD) simulations. An average compressive strain on the order of 0.5% is determined in graphene on Cu(111). In graphene on Cu (100), MD simulations interpret the observed highly nonuniform strains.

Original languageEnglish
Pages (from-to)2408-2413
Number of pages6
JournalNano Letters
Volume12
Issue number5
DOIs
StatePublished - May 9 2012

Keywords

  • CVD
  • Graphene
  • copper
  • strain

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