Table 1.

Mechanical properties of ~2500 nm thick antibacterial Cr–Cu–O and Al–Cu–N coatings with 100% killing of E. coli bacteria sputtered at the substrate temperatures T_s = 500 °C and 400 °C, respectively, and assessment of their resistance to cracking by bending around a cylinder of radius r_fc = 10 mm.

Coating	Cu (at.%)	H (GPa)	E* (GPa)	We (%)	H/E*	σ	Cracks in Bending
Cr–Cu–O	19.5	3.2	70	36	0.046	0.1	yes
Al–Cu–N	9.6	21.9	180	74	0.122	−1.7	no