deposition of antimicrobial copper-rich coatings on polymers by atmospheric pressure jet plasmas
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2016
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Abstract
Inanimate surfaces serve as a permanent reservoir for infectious microorganisms, which is a growing problem in areas in everyday life. Coating of surfaces with inorganic antimicrobials, such as copper, can contribute to reduce the adherence and growth of microorganisms. The use of a DC operated air plasma jet for the deposition of copper thin films on acrylonitrile butadiene styrene (ABS) substrates is reported. ABS is a widespread material used in consumer applications, including hospitals. The influence of gas flow rate and input current on thin film characteristics and its bactericidal effect have been studied. Results from X-ray photoelectron spectroscopy (XPS) and atomic force microscopy confirmed the presence of thin copper layers on plasma-exposed ABS and the formation of copper particles with a size in the range from 20 to 100 nm, respectively. The bactericidal properties of the copper-coated surfaces were tested against Staphylococcus aureus. A reduction in growth by 93% compared with the attachment of bacteria on untreated samples was observed for coverage of the surface with 7 at. % copper.| Reference Key |
kredl2016materialsdeposition
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| Authors | ;Jana Kredl;Juergen F. Kolb;Uta Schnabel;Martin Polak;Klaus-Dieter Weltmann;Katja Fricke |
| Journal | Nature Materials |
| Year | 2016 |
| DOI | 10.3390/ma9040274 |
| URL | |
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