Subjecting a graphene monolayer to tension and compression
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Tsoukleri, G., Parthenios, J., Papagelis, K., Jalil, R., Ferrari, A., Geim, A., Novoselov, K., & et al. (2009). Subjecting a graphene monolayer to tension and compression. Small, 5 (21), 2397-2402. https://doi.org/10.1002/smll.200900802
The mechanical behaviour of graphene flakes under both tension and compression is examined using a cantilever-beam arrangement. Two different sets of samples were employed involving flakes just supported on a plastic bar but also embedded within the plastic substrate. By monitoring the shift of the 2D Raman line with strain, information on the stress transfer efficiency as a function of stress sign and monolayer support were obtained. In tension, the embedded flake seems to sustain strains up to 1.3%, whereas in compression there is an indication of flake buckling at about 0.7% strain. The retainment of such a high critical buckling strain confirms the relative high flexural rigidity of the embedded monolayer.
External DOI: https://doi.org/10.1002/smll.200900802
This record's URL: https://www.repository.cam.ac.uk/handle/1810/286119