Mechanincally- and chemically-active nanostructured antibacterial surfaces fabricated by glancing angle sputter deposition
N. Ziegler1, C. Sengstock2, K. Tschulik3, M. Köller2, Alfred Ludwig1
1Ruhr-University Bochum, Faculty of Mechanical Engineering, Institute for Materials, Universitätsstraße 150, 44801 Bochum, Germany
2University Hospital Bergmannsheil, Surgical Research, Buerkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
3Ruhr-University Bochum, Faculty of Chemistry and Biochemistry, Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), Universitätsstraße 150, 44801 Bochum, Germany
To reduce implant associated infections, implant materials need to have antibacterial properties combined with good tissue compatibility. The nanostructure of Clanger cicada, was synthetically mimicked in this study by glancing angle deposition (GLAD) sputtering. The produced nano-columns are effective against gram-negative bacteria which can be related to their specific geometry . Furthermore, antibacterial materials e.g. silver show the ability to kill gram-negative and gram-positive bacteria (chemical effect). To control the release of Ag from antibacterial surfaces, a sacrificial anode concept was realized . Finally, the mechanically active nanocolumns will be combined with the antibacterial ion release to create novel antibacterial surfaces.
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