Mechanical properties of bilayer graphene sheets coupled by sp3 bonding

Zhang, Y. Y., Wang, C. M., Cheng, Y. and Xiang, Y. (2011) Mechanical properties of bilayer graphene sheets coupled by sp3 bonding. Carbon, 49 13: 4511-4517. doi:10.1016/j.carbon.2011.06.058

Author Zhang, Y. Y.
Wang, C. M.
Cheng, Y.
Xiang, Y.
Title Mechanical properties of bilayer graphene sheets coupled by sp3 bonding
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
Publication date 2011-01-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.carbon.2011.06.058
Open Access Status Not yet assessed
Volume 49
Issue 13
Start page 4511
End page 4517
Total pages 7
Language eng
Abstract The mechanical properties, such as the Young's modulus, the interlayer shear modulus and the ultimate tensile strength, of bilayer graphene sheets (GS) coupled by sp3 bonding are investigated by molecular dynamics simulations. These mechanical properties are found to be sensitive to the presence of sp3 bonds in the bilayer GS. The sp3 bonds exert a strengthening influence on the interlayer shear modulus as well as the load transfer rate, thereby enhancing the stability capacity of GS under axial compression. However, the presence of sp3 bonds also leads to a reduction in the Young's modulus, ultimate tensile strength and the associated facture strain. The adverse and strengthening effects induced by the sp 3 bonds are also strongly dependent of their distributions. Simulation results suggest that a small amount of sp3 bonds can be introduced in GS to improve its load transfer rate and stability substantially at the expense of a marginal deterioration in the Young's modulus and tensile strength.
Keyword Chemistry, Physical
Materials Science, Multidisciplinary
Materials Science
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID P00019268
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 91 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 103 times in Scopus Article | Citations
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Created: Tue, 17 Jan 2017, 00:29:33 EST by Clare Nelson on behalf of Learning and Research Services (UQ Library)