Table 4.

Quantitative results for the metallic elements in atomic percentage.

Element	PO	UV-LIPSS	GR-LIPSS
Ti(0)	4.53	4.29
Ti(II)	4.29	3.99	2.81
Ti(IV)	69.39	73.68	58.78
Al(0)	1.44	2.34
Al(III)	15.83	11.89	33.79
V(0)	0.46
V(III)	1.18	2.30	1.16
V(IV)	1.83	1.52	1.93
V(V)	1.05	0.00	1.53