| Autor: |
Xi Rao, Jihan Yang, Zilin Chen, Yidie Yuan, Qiubing Chen, Xue Feng, Lizhao Qin, Yongping Zhang |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Bioactive Materials, Vol 5, Iss 2, Pp 192-200 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2452-199X |
| DOI: |
10.1016/j.bioactmat.2020.02.009 |
| Popis: |
Diamond like carbon (DLC) films with different C–C sp2/sp3 ratios were prepared by tuning the N2 flow rate in a filtered cathodic vacuum arc (FCVA) system. The increase of N2 flow rate facilitated the increase of C–C sp2/sp3 ratio (1.09–2.66), the growth of particle size (0.78–1.58 nm) and the improvement of surface roughness. The SBF immersion results, as well as WCAs (77.57°~71.71°), hemolysis rate (0.14–1.00%) and cytotoxicity level (0) demonstrated that the as-fabricated DLC film was promising for biomedical application. As a result of surface charge effect, the apatite layers formed in the SBF increased with the increase of C–C sp2/sp3 ratio until 1.74 and then showed a tiny decrease during 1.74–2.66. A raise of hemolysis and cytotoxicity was observed when sp2/sp3 ratio was increased. Moreover, a decrease of friction coefficient of Si surface induced by increasing sp2/sp3 ratio was respectively evidenced in ambient air and SBF lubrication environments. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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