01914nas a2200253 4500008004100000245013900041210006900180260002500249490000800274520105500282653001901337653000801356653003601364653001601400653000801416100002201424700002001446700002901466700003101495700001901526700002301545700001901568856007301587 2008 eng d00aFunctionalization of Hydrogen-free Diamond-like Carbon Films using Open-air Dielectric Barrier Discharge Atmospheric Plasma Treatments0 aFunctionalization of Hydrogenfree Diamondlike Carbon Films using aBoulder, COc08/20080 v2543 a
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.
10aCell viability10aDLC10aIon implantation and deposition10awettability10aXPS1 aEndrino, Jose, L.1 aMarco, Jose, F.1 aPoolcharuansin, Phitsanu1 aPhani, Ayalasomayajula, R.1 aAllen, Matthew1 aAlbella, José, M.1 aAnders, André uhttps://facades.lbl.gov/publications/functionalization-hydrogen-free