Fig. 3: Representative SEM images of DLC surfaces after sliding in PAO+ZDDP.
SEM images for a a-C:H, b a-C, c ta-C(51), d ta-C(66), and e ta-C(78). ZDDP-derived species are indicated by green dots in a−c and by dashed red circles in d and e.
Fig. 3: Representative SEM images of DLC surfaces after sliding in PAO+ZDDP. | Nature Communications
