Diameter Tuning of Single-Walled Carbon Nanotubes by Diffusion Plasma CVD

Figure 2

(a–d) PLE maps of as-grown freestanding SWNTs grown at the different pressures: (a) 550 Pa, (b) 300 Pa, (c) 100 Pa, and (d) 40 Pa, respectively. (e) Growth pressure dependence of RBM in Raman scattering spectra (632.8 nm excitation) of as-grown freestanding SWNTs.