Growth of Single-Walled Carbon Nanotubes by Plasma CVD

Figure 3

(a)–(d) PLE maps of as-grown freestanding SWNTs grown under different pressures ((a) 550 Pa, (b) 300 Pa, (c) 100 Pa, and (d) 40 Pa). (e) Dependence of the RBM in Raman scattering spectra on growth pressure for as-grown freestanding SWNTs.