Fig. 2: Isotope effect in the electrochemical hydrogenation of graphene.
From: Mechanism of the electrochemical hydrogenation of graphene
Top panel, electrochemical response of devices. Top x-axis, Fermi energy of electrons in graphene vs NP. Top inset, Raman spectra of hydrogenated (red) and deuterated graphene (blue). Bottom panel, in-plane electronic response of devices measured with proton (red data) and deuteron (blue data) conducting electrolytes. Data obtained simultaneously with data in the top panel. Dashed lines mark a 40 meV difference in Fermi energy. Bottom inset, zoom in from the boxed area in the main panel.
