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  • Modification of surface morphology of graphite by oxygen plasma treatment = Sprememba morfologije grafita med obdelavo s kisikovo plazmo
    Eleršič Filipič, Kristina ...
    Samples of highly oriented pyrolitic graphite (HOPG) were exposed to fully dissociated oxygen plasma created by a radiofrequency discharge in pure oxygen. The discharge was powered with a ... radiofrequency generator operating at the standard industrial frequency of 13.56 MHz and the output power of 1000 W. Samples of pyrolitic graphite were in pieces with dimensions of 10 mm x 10 mm x ("1.7) mm in high and exposed to plasma for different periods up to 90 s. The morphology of originally perfectly flat samples was monitored with a high resolution scanning electron microscope (SEM). Oxygen plasma caused non-homogeneous etching of samples. The first visible effect of plasma treatment was an appearance of rather spherical features of sub-micrometer dimensions as well as randomly oriented channel - like structures. Increasing the treatment time caused transformation of the spherical features into cones. The size of cones increased until about 40 s of plasma treatment. Large cones of few micrometers in size were observed at spots with surface dust particles. Prolonged treatment caused destruction of the cones and formation of sub-micrometer large holes. The effects were explained by interaction of highly excited oxygen Particles with surface carbon atoms.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 45, št. 3, maj-jun. 2011, str. 232-239)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 859562

    Povezava(-e):

    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 45, št. 3, maj-jun. 2011, str. 232-239)

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