Auxeticity in Single Layer Graphene Sheets

FL Scarpa, S Adhikari, Phani A. Srikantha

Research output: Contribution to journalArticle (Academic Journal)

Abstract

In this work we identify boundary conditions and types of loading for single layer graphene sheets (SLGS) suggesting an auxetic behaviour for the C-C bonds and the graphene layers. The mechanical properties of the SLGS are identified using an equivalent atomistic-continuum model proposed in [1], and compared with existing data in open literature. Under clamped-free uniaxial loading, the overall mechanical properties of the SLGS can be explained assuming an equivalent mechanical auxetic behaviour of the C-C bonds. When the SLGS have full blocked boundary conditions and undergo resonance, the minimisation of the Hamiltonian leads to the identification of equivalent negative Poisson’s ratio (NPR) in the graphene sheets.
Translated title of the contributionAuxeticity in Single Layer Graphene Sheets
Original languageEnglish
Pages (from-to)39 - 43
JournalInternational Journal of Novel Materials
Volume1
Publication statusPublished - Jul 2010

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