Browsing by Author "Sanchez-Paisal, Y."
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Zr-metal adhesion on graphenic nanostructures(2008) Sanchez-Paisal, Y.; Sanchez-Portal, D.; Garmendia, N.; Muoz, R.; Obieta, I.; Arbiol, J.; Calvo-Barrio, L.; Ayuela, A.; Tecnalia Research & InnovationOur high resolution transmission electronic microscopy studies of multiwall carbon nanotubes show, after the growth of zirconia nanoparticles by a hydrothermal route, the presence of surface Zr, forming an atomically thin layer. Using first-principles calculations we investigate the nature of the Zr-C interaction, which is neither ionic nor covalent, and the optimal coverage for the Zr metal in a graphene flake. This preferred coverage is in agreement with that deduced from electron energy loss spectra experiments. We show also that the amount of charge transferred to the C layer saturates as the Zr coverage increases and the Zr-C bond becomes weaker.