Abstract:
A method includes the following steps: providing a grafting device (20) including a torch (26) that produces a flame (28) in a volume of ambient air and a cooling substrate (33) positioned facing the flame (28); moving the elongate material (14) continuously through the flame (28) between the torch (26) and the cooling substrate (33); and grafting carbon nanostructures (16) continuously onto the elongate material (14) during its passage through the flame (28).