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Title:
Modification of Glassy Carbon Surfaces by Atmospheric Pressure Cold Plasma Torch
Authors:
Mortensen, Henrik; Kusano, Yukihiro; Leipold, Frank; Rozlosnik, Noemi; Kingshott, Peter; Goutianos, Stergios; S{ø}rensen, Bent F.; Stenum, Bjarne; Bindslev, Henrik
Affiliation:
AA(Optics and Plasma Research Department, Ris{ø} National Laboratory, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark)
Publication:
Japanese Journal of Applied Physics, Volume 45, Issue 10B, pp. 8506 (2006).
Publication Date:
10/2006
Origin:
IPAP
Bibliographic Code:
2006JaJAP..45.8506M

Abstract

The effect of plasma treatment on glassy carbon (GC) surfaces was studied with adhesion improvement in mind. A newly constructed remote plasma source was used to treat GC plates. Pure He and a dilute NH3/He mixture were used as feed gases. Optical emission spectroscopy was performed for plasma torch diagnostics. The treatment resulted in surface etching, substantially enhanced by NH3, as well as a roughening of the surface as measured by atomic force microscopy. Furthermore, the treated area showed an increased wettability indicating the addition of polar functional groups to the surface. X-ray photoelectron spectroscopy confirmed the introduction of several oxygen and nitrogen containing surface functional groups. The adhesion to epoxy was dramatically improved after exposure to either plasma, the effect being largest when NH3 was present in the feed gas.
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