About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Advanced Coatings for Wear and Corrosion Protection
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| Presentation Title |
Oxide thin films obtained by reactive sputtering for antifouling purposes |
| Author(s) |
Gabriel Abelha Carrijo Gonçalves, Bruno Leonardo Ribeiro Oliveira, Denise Tornavoi de Castro, Marcelo Rodrigues Pinto, Rogério Valentim Gelamo, Jeferson Aparecido Moreto, Idalina Vieira Aoki |
| On-Site Speaker (Planned) |
Gabriel Abelha Carrijo Gonçalves |
| Abstract Scope |
Antifouling coatings are essential to prevent biofouling on marine structures. This study evaluates CuO, ZnO, and CuO-ZnO thin films (TF) produced via reactive sputtering, focusing on morphology and antifouling performance. Wettability was analyzed through contact angle measurements, and morphology via atomic force microscopy. Biocidal activity against Pseudomonas aeruginosa was assessed colony-forming unit (CFU) analysis, metabolic activity (XTT), and fluorescence microscopy. The coatings maintained an average roughness of 28 nm. CuO-TF exhibited lower skewness (0.0901) and a 64% reduction in contact angle (50 ± 3)°, indicating increased hydrophilicity. This correlated with superior biocidal activity, showing reduced metabolic activity, (0.069 ± 0.036 absorbance at 492 nm), compared to the control (0.21 ± 0.11), ZnO-TF (0.25 ± 0.14), and CuO-ZnO-TF (0.22 ± 0.09). These findings highlight CuO-TF’s promising potential as an antifouling material. |