Europium Effect on the Electron Transport in Graphene Ribbons
AD Bobadilla and LE Ocola and AV Sumant and M Kaminski and N Kumar and JM Seminario, JOURNAL OF PHYSICAL CHEMISTRY C, 119, 22486-22495 (2015).
We report in this complementary theoretical-experimental work the effect of gating on the electron transport of graphene ribbons when exposed to very low concentration of europium in an aqueous solution. We find a direct correlation between the level of concentration of europium ions in the solvent and the change in electron transport in graphene, observing a change of up to 3 orders of magnitude at the lowest level of concentration tested (0.1 mM), suggesting a possibility that graphene ribbons can be used for detecting very low concentrations of europium in liquid solutions.
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