2009/06/30 by Jin-Wu Jiang, Jian‐Sheng Wang, Jian-Sheng Wang +1 · 3 citations
Chemistry · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Chemistry #Composite material #Computational chemistry #Condensed matter physics #Graphene #Graphene research and applications #Materials science #Modulus #Molecular dynamics #Nanotechnology #Physics #Thermal properties of materials #Young's modulus #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.80.113405
published as Phys. Rev. B 80, 113405 (2009) · accepted by PRB, brief report, discussion on Poisson ratio added
arxiv created 2009/09/03 · openalex publication_date 2009/09/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.