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- W1993095087 abstract "The paper reports on the effect of Cu content in the Cr–Cu–O film and its structure on its antibacterial activity and mechanical properties. The Cr–Cu–O films were prepared by reactive magnetron sputtering from composed Cr/Cu targets using a dual magnetron. The antibacterial activity of Cr–Cu–O films was tested on the killing of Escheria coli bacteria. Correlations between the structure of the Cr–Cu–O film, the content of Cu in the film and its (i) antibacterial efficiency and (ii) mechanical properties were investigated in detail. It was found that the 100% efficiency of the killing of E. coli bacteria on the surface of the Cr–Cu–O film is achieved if (1) the Cu content in the film is ≥15 at.% and (2) the film is either X-ray amorphous or crystalline with the CuCrO2 delafossite structure. These Cr–Cu–O films need no excitation and very effectively kill E. coli bacteria in the daylight as well as in the dark. The X-ray amorphous Cr–Cu–O films with ~20 at.% Cu exhibit a higher (i) hardness H ≈ 4 GPa, (ii) effective Young's modulus E* ≈ 72 GPa and (iii) elastic recovery We ≈ 37% compared with the crystalline Cr–Cu–O film with the CuCrO2 delafossite structure exhibiting H ≈ 1.2 GPa, E* ≈ 21 GPa and We ≈ 21%. Both films very effectively kill the E. coli bacteria, however, exhibit a low ratio H/E* < 0.1." @default.
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- W1993095087 date "2013-07-01" @default.
- W1993095087 modified "2023-10-02" @default.
- W1993095087 title "Antibacterial Cr–Cu–O films prepared by reactive magnetron sputtering" @default.
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- W1993095087 doi "https://doi.org/10.1016/j.apsusc.2013.03.150" @default.
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