Energetics and structure of grain boundary triple junctions in graphene

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Oakland University
  • Loughborough University

Kuvaus

Grain boundary triple junctions are a key structural element in polycrystalline materials. They are involved in the formation of microstructures and can influence the mechanical and electronic properties of materials. In this work we study the structure and energetics of triple junctions in graphene using a multiscale modelling approach based on combining the phase field crystal approach with classical molecular dynamics simulations and quantum-mechanical density functional theory calculations. We focus on the atomic structure and formation energy of the triple junctions as a function of the misorientation between the adjacent grains. We find that the triple junctions in graphene consist mostly of five-fold and seven-fold carbon rings. Most importantly, in addition to positive triple junction formation energies we also find a significant number of orientations for which the formation energy is negative.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli4754
Sivut1-14
JulkaisuScientific Reports
Vuosikerta7
Numero1
TilaJulkaistu - 6 heinäkuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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