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A variational model for conformation of graphene wrinkles formed on a shrinking solid metal substrate

Journal Article


Abstract


  • Chemical vapor deposition is a popular technique for producing high-quality graphene sheets on a substrate. However, the cooling process causes the graphene sheet to experience a strain-induced, out-of-plane buckling. These wrinkles structures can have undesirable effects on the properties of the graphene sheet. We construct a pair of models to analyse the conformation structure of these wrinkles. An arch-shaped wrinkle is first modelled then expanded to incorporate self-adhesion between the wrinkle edges. Variational techniques are employed on both models to determine the optimal conformation for graphene supported on Cu and Ni substrates. We find these models predict a similar structure to experimental analysis of graphene wrinkles on these solid metal substrates.

Publication Date


  • 2020

Citation


  • Cox, B., Dyer, T., & Thamwattana, N. (2020). A variational model for conformation of graphene wrinkles formed on a shrinking solid metal substrate. Materials Research Express, 7(8). doi:10.1088/2053-1591/abaa8f

Scopus Eid


  • 2-s2.0-85091803772

Volume


  • 7

Issue


  • 8

Abstract


  • Chemical vapor deposition is a popular technique for producing high-quality graphene sheets on a substrate. However, the cooling process causes the graphene sheet to experience a strain-induced, out-of-plane buckling. These wrinkles structures can have undesirable effects on the properties of the graphene sheet. We construct a pair of models to analyse the conformation structure of these wrinkles. An arch-shaped wrinkle is first modelled then expanded to incorporate self-adhesion between the wrinkle edges. Variational techniques are employed on both models to determine the optimal conformation for graphene supported on Cu and Ni substrates. We find these models predict a similar structure to experimental analysis of graphene wrinkles on these solid metal substrates.

Publication Date


  • 2020

Citation


  • Cox, B., Dyer, T., & Thamwattana, N. (2020). A variational model for conformation of graphene wrinkles formed on a shrinking solid metal substrate. Materials Research Express, 7(8). doi:10.1088/2053-1591/abaa8f

Scopus Eid


  • 2-s2.0-85091803772

Volume


  • 7

Issue


  • 8