We have investigated the microstructure and tribological properties (were resistance) of diamond-like carbon (DLC), DLC doped with Cu and DLC doped with Ti deposited by a sequential pulsed laser ablation of two targets onto Si(100) substrates. The composition of these films was determined by Rutherford backscattering spectroscopy and X-ray photoelectron spectroscopy (XPS). Raman spectroscopy and detailed analysis of the electron diffraction patterns of the films showed typical features of DLC with a structure dominated by sp~3 bonded carbon Wear resistance measurements made on these samples by means of the "crater grinding method" showed that DLC+2.75
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