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arXiv · 0910.0622

Subjecting a graphene monolayer to tension and compression

Georgia Tsoukleri·John Parthenios·Konstantinos Papagelis·Rashid Jalil·Andrea C. Ferrari·A. K. Geim·Kostya S. Novoselov·Costas Galiotis
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Abstract

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.

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Georgia Tsoukleri, John Parthenios, Konstantinos Papagelis, Rashid Jalil, Andrea C. Ferrari, A. K. Geim, Kostya S. Novoselov, Costas Galiotis. 2009-10-04. Subjecting a graphene monolayer to tension and compression. https://doi.org/10.1002/smll.200900802

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