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(a) Top view and side view of the simultaneous presence of Cd0 and Pb0 neutral metal adatoms on the graphene surface. Contour plots of the electron localization function (ELF) and color-filled maps of localized orbital locator (LOL) for the elemental heavy metal species adsorbed onto graphene: Cd0 on Gr (b,e), Pb0 on Gr (c,f), and Cd0 and Pb0 on Gr (d,g), respectively.
