Carbon Nanofibers from Carbon Nanotubes by 1.2 keV Ar⁺ Sputtering at Room Temperature

Figure 2

SEM images of CNTs irradiated by 1.2 keV Ar ions for 15–60 min. (a) 15 min; (b) 30 min; the inset was the typical TEM images of CNTs; (c) 45 min; (d) 60 min; the inset was the high-resolution SEM images.

(a)

(b)

(c)

(d)