@article{23696,
  keywords = {Cell viability, DLC, Ion implantation and deposition, Wettability, XPS},
  author = {Jose L Endrino and Jose F Marco and Phitsanu Poolcharuansin and Ayalasomayajula R Phani and Matthew Allen and José M Albella and André Anders},
  title = {Functionalization of Hydrogen-free Diamond-like Carbon Films using Open-air Dielectric Barrier Discharge Atmospheric Plasma Treatments},
  abstract = {<p>A dielectric barrier discharge (DBD) technique has been employed to produce uniform atmospheric plasmas of He and N<sub>2</sub> gas mixtures in open air in order to functionalize the surface of filtered-arc deposited hydrogen-free diamond-like carbon (DLC) films. XPS measurements were carried out on both untreated and He/N<sub>2</sub> DBD plasma-treated DLC surfaces. Chemical states of the C 1s and N 1s peaks were collected and used to characterize the surface bonds. Contact angle measurements were also used to record the short- and long-term variations in wettability of treated and untreated DLC. In addition, cell viability tests were performed to determine the influence of various He/N<sub>2</sub> atmospheric plasma treatments on the attachment of osteoblast MC3T3 cells. Current evidence shows the feasibility of atmospheric plasmas in producing long-lasting variations in the surface bonding and surface energy of hydrogen-free DLC and consequently the potential for this technique in the functionalization of DLC-coated devices.</p>},
  year = {2008},
  journal = {Applied Surface Science},
  volume = {254},
  month = {08/2008},
  address = {Boulder, CO},
  doi = {10.1016/j.apsusc.2008.02.065},
  language = {eng},
}