ENDRINO ARMENTEROS, JOSÉ LUIS, Marco J.F. , Allen M. , Poolcharuansin P. , Phani A.R. , Albella J.M. , Anders A.
Si
Appl. Surf. Sci.
Article
Científica
1.576
0.89
01/01/2008
000256099500005
2-s2.0-43849085955
A dielectric barrier discharge (DBD) technique has been employed to produce uniform atmospheric plasmas of He and N2 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/N2 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/N2 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. © 2008 Elsevier B.V. All rights reserved.
Contact angle; Deposition; Dielectric materials; Interfacial energy; Ion implantation; Osteoblasts; Plasma applications; Wetting; X ray photoelectron spectroscopy; Cell viability; Dielectric barrier discharge; Surface bonds; Diamond like carbon films