Growth Mechanism of a Hybrid Structure Consisting of a Graphite Layer on Top of Vertical Carbon Nanotubes
Figure 5
High-magnification TEM images of the top layer on the CNT grown from 1.9 nm Co. (a) and (b): graphitic carbon on the crest of the top layer; (c) lower-magnification picture showing elongated cobalt nanoparticles present right below the top layer.