Acta Mechanica Solida Sinica

, Volume 28, Issue 6, pp 618–625 | Cite as

Effects of SI, N and B Doping on the Mechanical Properties of Graphene Sheets

Article

Abstract

Molecular dynamics (MD) simulations were performed to stretch the rectangular graphene sheets doped with silicon, nitrogen or boron atoms. Young’s modulus, ultimate stress (strain) and energy absorption were measured for the graphene sheets with the doping concentration (DC) ranging from 0 to 5%. The emphasis was placed on the distinct effects of each individual dopant on the fundamental mechanical properties of graphene. The results indicated that incorporating the dopants into graphene led to an almost linear decrease in Young’s modulus. Monotonic reductions in ultimate strength, ultimate strain and energy absorption were also observed. Such doping effects were found to be most significant for silicon, less pronounced for boron, and small or negligible for nitrogen. The outputs provide an important guidance for the development and optimization of novel nanoscale devices, and facilitate the development of graphene-based M/NEMS.

Key Words

graphene doping mechanical properties molecular dynamics 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2015

Authors and Affiliations

  1. 1.Faculty of Civil Engineering and MechanicsJiangsu UniversityZhenjiangChina

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