Bending of multilayer nanomembranes

A. D. Drozdov, J. deClaville Christiansen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Governing equations are developed for bending of an elastic circular membrane under in-plane tension (prestress) and out-of-plane uniform pressure or concentrated force. These relations are applied to fitting observations on nanomembranes made of CVD-grown and mechanically exfoliated graphene, graphene oxides with various concentrations of defects, molybdenum disulfide, bismuth selenite, and tungsten diselenide. Good agreement is demonstrated between the experimental data and results of simulation. It is shown that the elastic modulus per layer of a multilayer membrane is independent of the number of layers n, whereas the prestress grows exponentially with n. Simple equations are suggested to describe the effect of defects in the crystalline structure of a nanomembrane on its mechanical properties. These equations and validated by comparison of the model predictions with observations of graphene oxide.

Original languageEnglish
Pages (from-to)261-272
Number of pages12
JournalComposite Structures
Volume182
DOIs
StatePublished - 15 Dec 2017
Externally publishedYes

Keywords

  • Defects
  • Elastic properties
  • Graphene
  • Multilayer nanomembrane

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