Effect of the ratio of catalyst to carbon source on the growth of vertically aligned carbon nanotubes on nanostructured porous silicon templates

These data revealed that the amount of catalyst used significantly affected the diameter, crystallinity and growth rate of the synthesised nanotubes. The average diameter of the nanotubes ranged from [almost equal to] 9 to 30 nm with lengths of [almost equal to] 110 mum when 0.5 g ferrocene was used.