TY - JOUR
KW - Cell viability
KW - DLC
KW - Ion implantation and deposition
KW - Wettability
KW - XPS
AU - Jose L Endrino
AU - Jose F Marco
AU - Phitsanu Poolcharuansin
AU - Ayalasomayajula R Phani
AU - Matthew Allen
AU - José M Albella
AU - André Anders
AB - <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>
BT - Applied Surface Science
C1 - <p>Windows and Daylighting Group</p>
C2 - LBNL-265E
CY - Boulder, CO
DA - 08/2008
DO - 10.1016/j.apsusc.2008.02.065
IS - 17
LA - eng
N2 - <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>
PP - Boulder, CO
PY - 2008
T2 - Applied Surface Science
TI - Functionalization of Hydrogen-free Diamond-like Carbon Films using Open-air Dielectric Barrier Discharge Atmospheric Plasma Treatments
VL - 254
ER -