Piazza, FabriceMorell, Gerardo2019-11-192019-11-19Piazza, F. & Morell, G. (2009). Wettability of hydrogenated tetrahedral amorphous carbon. Diamond and Related Materials, 18(1), 43-50. doi: https://doi.org/10.1016/j.diamond.2008.09.0230925-9635http://repositorioinvestigare.pucmm.edu.do/handle/20.500.12060/2011The wettability and surface energy of hydrogenated amorphous carbon films (a-C:H) elaborated by distributed electron cyclotron resonance plasma were studied by contact angle measurements in relation to composition, structure and topography. Tetrahedral a-C:H (ta-C:H) showed relatively high water contact angle (CA) up to 82.3°, and low surface energy (Es), down to 25.3 mJ/m2. Hydrophobicity was found to increase with the intensity of the ion bombardment and with the tetrahedral character. A decrease of the dispersive component is responsible of the decrease of surface energy with substrate bias. Low mass-density polymer-like a-C:H (PLC) presents also a relatively high hydrophobicity with high water CA, up to 76.7°, and low surface energy values, down to 32.1 mJ/m2. Hydrophobicity is interpreted as resulting from a surface layer rich in sp2-carbon for ta-C:H and rich in C–H bonds for PLC.enAttribution-NonCommercial-NoDerivs 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-nd/3.0/us/ArtículoNanocarbón