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Raman spectroscopy of graphene and bilayer under biaxial strain: bubbles and balloons

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arxiv 1201.1454 v1 pith:4WRL4OYH submitted 2012-01-06 cond-mat.mes-hall

Jakob Zabel , Rahul R. Nair , Anna Ott , Thanasis Georgiou , Andre K. Geim , Kostya S. Novoselov , Cinzia Casiraghi This is my paper · ORCID
classification cond-mat.mes-hall
keywords graphenestrainballoonsbiaxialbilayerbubblesramansubstrate
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In this letter we use graphene bubbles to study the Raman spectrum of graphene under biaxial (e.g. isotropic) strain. Our Gruneisen parameters are in excellent agreement with the theoretical values. Discrepancy in the previously reported values is attributed to the interaction of graphene with the substrate. Bilayer balloons (intentionally pressurized membranes) have been used to avoid the effect of the substrate and to study the dependence of strain on the inter-layer interactions.

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