Canadian researchers at the University of Alberta have found the surface nanocrystallization of a metallic material is an effective approach for modifying the surface energy of metals. “Our results demonstrate that the combination of surface nanocrystallization and thermal oxidation treatment is a promising approach to suppress the formation of infectious biofilms on metallic materials, thus providing a surface technique to minimize bacterial biofilms on implant surfaces for improved orthodontic and orthopedic applications” says Li the lead researcher. This surface modification is promising not only for suppressing bacterial biofilms on medical implant materials but also has potential in treating materials for food processing and storage as well as for bio-corrosion control. Li points out that it is also possible to add additional elements into the nanocrystalline surface layer to further improve surfaces with anti-bacteria capability.
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