Figure 2From: Multi-Directional Growth of Aligned Carbon Nanotubes Over Catalyst Film Prepared by Atomic Layer Deposition a Typical XPS data on substrate surface with Fe2O3 deposited by 30 ALD cycles; b Iron concentration at the surface of Fe2O3/Al2O3(10 nm)/SiO2(700 nm)/Si after different ALD cyclesBack to article page