Mechanical properties of graphene

Sun, Y. W.; Papageorgiou, D. G.; Humphreys, C. J.; Dunstan, D. J.; Puech, P.; Proctor, J. E.; Bousige, C.; Machon, D.; San-Miguel, A.

Abstract

This paper reviews the mechanical properties of graphene with particular attention to what is established and what is still uncertain. It clarifies the thickness and the elastic constants, and by also considering also phonon frequencies, it argues that “best values” come from graphite, when available. Properties not available from graphite include bending stiffness; this can be determined from studies of carbon nanotubes as well as graphene. In many ways, nanotubes provide access to fundamental properties of graphene, not least because they are the only form of graphene that can be unsupported (unstrained) in vacuum. Environmental effects are considered, including both interactions with substrates and with other solid and liquid media, which may affect the geometrical parameters defining graphene and associated elastic constants. Major uncertainties persist whether slipping or sticking dominates experimental observation, both between graphene and solid media, and between the layers of bilayer and multilayer graphene. The paper concludes with a short discussion of continuum and atomistic models of graphene.

• Journal Article Type: Article
• Acceptance Date: Mar 11, 2021
• Online Publication Date: Apr 19, 2021
• Publication Date: Jun 1, 2021
• Deposit Date: Apr 28, 2021
• Publicly Available Date: Apr 28, 2021
• Journal: Applied Physics Reviews
• Electronic ISSN: 1931-9401
• Publisher: AIP Publishing
• Volume: 8
• Issue: 2
• Pages: 021310
• DOI: https://doi.org/10.1063/5.0040578
• Keywords: General Physics and Astronomy
• Publisher URL: https://doi.org/10.1063/5.0040578
• Related Public URLs: http://aip.scitation.org/journal/are
• Additional Information: Additional Information : ** From Crossref journal articles via Jisc Publications Router **Journal IDs: eissn 1931-9401 **History: published 06-2021; Access Information : This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Y. W. Sun, D. G. Papageorgiou, C. J. Humphreys, D. J. Dunstan, P. Puech, J. E. Proctor, C. Bousige, D. Machon, and A. San-Miguel , "Mechanical properties of graphene" , Applied Physics Reviews 8, 021310 (2021) and may be found at https://doi.org/10.1063/5.0040578; Projects : Graphene Flagship