Scaling relation for thermal ripples in single and multilayer graphene

Arunima K. Singh, Richard G. Hennig

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Ripples in graphene can occur due to strain or thermal fluctuations and stabilize the two-dimensional material. Molecular dynamics simulations show that thermally induced ripples in graphene lead to angular deviations of the surface normal that agree with previous electron diffraction experiments. We discover scaling relationships for the average angular deviations as a function of size of the graphene sheet L and averaging radius R. The average angle scales as exp{-c(R/L)α} with a scaling exponent α=1 for single layer, 5/4 for bilayer, and 5/3 for trilayer graphene, respectively. We show how these angular deviations depend on temperature, strain, and layer numbers. The scaling relations can provide guidance to the optimization of properties that are sensitive to out-of-plane distortions.

Original languageEnglish (US)
Article number094112
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number9
DOIs
StatePublished - Mar 26 2013
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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