Young’s modulus of graphene: A molecular dynamics study

Jin-Wu Jiang, Jian-Sheng Wang, and Baowen Li
Phys. Rev. B 80, 113405 – Published 23 September 2009

Abstract

The Young’s modulus of graphene is investigated through the intrinsic thermal vibration in graphene which is “observed” by molecular dynamics and the results agree very well with the recent experiment [Lee et al., Science 321, 385 (2008)]. This method is further applied to show that the Young’s modulus of graphene (1) increases with increasing size and saturates after a threshold value of the size; (2) increases from 0.95 to 1.1 TPa as temperature increases in the region [100, 500] K; (3) is insensitive to the isotopic disorder in the low disorder region (<5%) and decreases gradually after further increasing the disorder percentage.

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  • Received 6 July 2009

DOI:https://doi.org/10.1103/PhysRevB.80.113405

©2009 American Physical Society

Authors & Affiliations

Jin-Wu Jiang1, Jian-Sheng Wang1, and Baowen Li1,2

  • 1Department of Physics and Centre for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore
  • 2NUS Graduate School for Integrative Sciences and Engineering, Singapore 117456, Republic of Singapore

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Issue

Vol. 80, Iss. 11 — 15 September 2009

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