Abstract :
Stainless steel disks were implanted with N+, O+ and SiF3
+, respectively at the Surrey Ion Beam Centre. The surface properties of the implanted
surfaces were analyzed, including surface chemical composition, surface topography, surface roughness and surface free energy. Bacterial
adhesion of Pseudomonas aeruginosa, Staphylococcus epidermidis and Staphylococcus aureus, which frequently cause medical device-associated
infections was evaluated under static condition and laminar flow condition. The effect of contact time, growth media and surface properties of the
ion-implanted steels on bacterial adhesion was investigated. The experimental results showed that SiF3
+-implanted stainless steel performed much
better than N+-implanted steel, O+-implanted steel and untreated stainless steel control on reducing bacterial attachment under identical
experimental conditions.
