Research / 2018 / Article / Fig 6

Research Article

Catalyst-Free In Situ Carbon Nanotube Growth in Confined Space via High Temperature Gradient

Figure 6

Growth of CNTs in between confined RGO layers using Joule heating without a catalyst or external carbon source. (a) A schematic showing the growth of CNTs in between the RGO layers. (b-d) Low- and high-magnification SEM images of CNTs in between RGO layers.