Fig. 4From: Atomic Layer Deposition of Buffer Layers for the Growth of Vertically Aligned Carbon Nanotube ArraysRaman spectra of VACNTs grown on different buffer layers at 650 °C: a Al2O3, b TiO2, c ZnO, and d SiO2. The spectra have been normalized to the intensity of the G band in order to facilitate comparisonBack to article page