Multi-Walled Carbon Nanotubes (MWCNTs) Synthesized on Ni-Cu NPs @ a-C: H Films: A Study of Cavity and Bearing Areas Percentage, ZX Topography, and the Width of the Surface Height Distribution with Different Ni Layers’ Thickness

Topological characterizations and optical density of the synthesized hydrogenated amorphous carbon Cu-Ni NPs @ a-C: H nanotubes (CNTs) with different surface morphology were studied in this report. Films deposited with Ni layer thickness of 5 nm have a maximum value of optical density especially, in the high energy range. Steps between 1800 to 2000 KeV in the Rutherford backscattering (RBS) spectra correspond to the presence of Cu and Ni elements. The thicknesses of films were measured by using SIMN-RA software. Films deposited with Ni layer thickness of 15 nm have a maximum value of the lateral size of nanotubes in about 19.7 nm. The grown CNTs of films deposited with Ni layer thickness 15 nm Ni, has a maximum value of diameter in about 16.2 nm. The diagram of bearing area proportion height shows the percentage of cavities and single-layers. The cavity coverage of films was less than 5 % and the layer content of films was about 90 %.