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Antibacterial Nanostructured Ti Coatings by Magnetron Sputtering: From Laboratory Scales to Industrial Reactors

AuthorsÁlvarez, Rafael CSIC ORCID ; Muñoz-Piña, Sandra; González Sagardoy, María Ujué CSIC ORCID ; Izquierdo-Barba, Isabel; Fernández-Martínez, Iván CSIC; Rico, Víctor J. CSIC ORCID; Arcos, Daniel; García-Valenzuela, A.; Palmero, Alberto CSIC ORCID; Vallet-Regí, María; González-Elipe, Agustín R. CSIC ORCID; García-Martín, José Miguel CSIC ORCID
KeywordsMagnetron sputtering
Oblique angle deposition
Nanostructured titanium thin films
Antibacterial coatings
Osteoblast proliferation
Industrial scale
Issue Date28-Aug-2019
PublisherMultidisciplinary Digital Publishing Institute
CitationNanomaterials 9(9): 1217 (2019)
AbstractBased on an already tested laboratory procedure, a new magnetron sputtering methodology to simultaneously coat two-sides of large area implants (up to ~15 cm2) with Ti nanocolumns in industrial reactors has been developed. By analyzing the required growth conditions in a laboratory setup, a new geometry and methodology have been proposed and tested in a semi-industrial scale reactor. A bone plate (DePuy Synthes) and a pseudo-rectangular bone plate extracted from a patient were coated following the new methodology, obtaining that their osteoblast proliferation efficiency and antibacterial functionality were equivalent to the coatings grown in the laboratory reactor on small areas. In particular, two kinds of experiments were performed: Analysis of bacterial adhesion and biofilm formation, and osteoblasts–bacteria competitive in vitro growth scenarios. In all these cases, the coatings show an opposite behavior toward osteoblast and bacterial proliferation, demonstrating that the proposed methodology represents a valid approach for industrial production and practical application of nanostructured titanium coatings.
Publisher version (URL)https://doi.org/10.3390/nano9091217
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(ICMS) Artículos
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