“…Nowadays, several roughness parameters such as kurtosis, S ku , skewness, S sk , reduced valley depth, S vk , and the mean absolute profile slope, Á a , have become further adopted for the investigation of surface behavior under specified contact conditions. [15][16][17][18] Experimental results 14 have confirmed the sensitivity of the friction to those parameters. Indeed, low friction was detected for negative skewness, S sk , high kurtosis, S ku , and smaller mean absolute profile slope, Á a .…”