author = "Guiti{\'e}rrez B., J. M. and Concei{\c{c}}{\~a}o, K{\'a}tia 
                         and Andrade, Vitor Martins de and Trava-Airoldi, Vladimir Jesus 
                         and Capote, G.",
          affiliation = "{Universidad Nacional de Colombia} and {Universidade Federal de 
                         S{\~a}o Paulo (UNIFESP)} and {Universidade Federal de S{\~a}o 
                         Paulo (UNIFESP)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Universidade Federal de S{\~a}o Paulo (UNIFESP)}",
                title = "High antibacterial properties of DLCfilm doped with nanodiamond",
              journal = "Surface and Coatings Technology",
                 year = "2019",
               volume = "375",
                pages = "395--401",
                month = "Oct.",
             keywords = "Diamond-like carbon, Detonation nanodiamond, Antibacterial 
                         activity, Doped DLC.",
             abstract = "DLC films are used in many applications, and nanoparticles are 
                         being used as dopant materials in a large number of films. In this 
                         investigation, DLC films doped with nanodiamond were deposited on 
                         Ti6Al4V substrates. Detonation nanodiamond (DND) was stirred in 
                         hexane with a sonicator at 750 W to obtain a suspension, which was 
                         introduced by an evaporation process into a PECVD reactor to 
                         produce DLC films continuously doped with nanoparticles. An 
                         amorphous silicon interlayer was used before depositing the DLC on 
                         the Ti6Al4V substrate. Raman spectroscopy results showed films 
                         with hydrogen contents around 22%. A scratch test on the Ti6Al4V 
                         alloy showed critical loads close to 19 N, and corrosion 
                         resistance measured via potentiodynamic polarization was improved 
                         with doped DLC over that of the bare substrate. An antibacterial 
                         test was carried out with Gram-negative Escherichia coli, showing 
                         antibacterial activity close to 95% 6 h after direct contact with 
                         the film. This result suggested that DLC is an excellent material 
                         for biomedical purposes. After 18 h of direct contact with the 
                         doped DLC film, antibacterial activity close to 25% was observed, 
                         which suggested that nanodiamonds are able to maintain their 
                         antibacterial properties and produce damage to E. coli cells.",
                  doi = "10.1016/j.surfcoat.2019.07.029",
                  url = "http://dx.doi.org/10.1016/j.surfcoat.2019.07.029",
                 issn = "0257-8972",
             language = "en",
           targetfile = "guitierrez_high.pdf",
        urlaccessdate = "17 abr. 2021"