Reduction of bacterial adhesion on ion-implanted stainless steel surfaces |
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Authors: | Zhao Q Liu Y Wang C Wang S Peng N Jeynes C |
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Affiliation: | Department of Mechanical Engineering, University of Dundee, Dundee, UK. q.zhao@dundee.ac.uk |
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Abstract: | The high incidence of infections caused by the use of biomedical devices has a severe impact on human health. An approach to reduce the complications is to modify the surface properties of biomedical devices. In this paper, stainless steel disks were implanted with N(+), O(+) and SiF(3)(+), respectively, by an ion implantation technique. The surface properties of the ion-implanted surfaces were characterized, including their surface chemical composition, roughness, topography, wettability and surface energy. Bacterial adhesion of Staphylococcus epidermidis and Staphylococcus aureus, which frequently cause medical device-associated infections was evaluated. The experimental results showed that these implanted stainless steels, particularly SiF(3)(+) implanted stainless steel performed much better than untreated stainless steel control on reducing bacterial attachment. |
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