Plasma Treatment of Glass Surfaces Using Diffuse Coplanar Surface Barrier Discharge in Ambient Air |
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Authors: | Tomáš Homola Jindřich Matoušek Martin Kormunda Linda Y. L. Wu Mirko Černák |
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Affiliation: | 1. R&D Centre for Low-Cost Plasma and Nanotechnology Surface Modification, Masaryk University, Kotlá?ská 267/2, 61137, Brno, Czech Republic 2. Surface Technology Group, Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore, 638075, Singapore 3. Department of Physics, Faculty of Science, J.E. Purkinje University, ?eské mláde?e 8, 400 96, ústí nad Labem, Czech Republic 4. Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina, 842 48, Bratislava, Slovakia
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Abstract: | We report a study on the treatment of flat glass surfaces by ambient air atmospheric pressure plasma, generated by a dielectric barrier discharge of coplanar arrangement of the electrode system—the diffuse coplanar surface barrier discharge (DCSBD). The plasma treatment of glass was performed in both static and dynamic modes. With respect to wettability of the glass surface, treatment in static mode resulted in non-uniform surface properties, whereas dynamic mode provided a fully uniform treatment. A water contact angle measurement was used to determine the efficiency of plasma treatments in dynamic mode and also to investigate a hydrophobic recovery of plasma treated glass surfaces. The X-ray photoelectron spectroscopy measurements showed a decrease of overall carbon concentrations after plasma treatment. A deconvolution of C1s peak, showed that a short plasma treatment led to decrease of C–C bonds concentration and increases of C–O and O–C=O bond concentrations. An enhancing influence of the glass surface itself on DCSBD diffuse plasma was observed and explained by different discharge onsets and changes in the electric field distribution. |
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