Influence of bias voltage on diamond like carbon (DLC) film deposited on poly-ethylene terephthalate (PET) film surfaces using PECVD and its blood compatibility

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Influence of bias voltage on diamond like carbon (DLC) film deposited on poly-ethylene terephthalate (PET) film surfaces using PECVD and its blood compatibility
Autor K. Navaneetha Pandiyaraj, V.Selvarajan, J. Heeg, F. Junge, A. Lampka, T. Barfels, Marion Wienecke, Young Ha Rhee, Hyoung Woo Kim
In: Diamond and related Materials
Ausgabe 19
ISBN/ISSN:
Erscheinungsjahr 2010
Jahrgang
Seitenzahl 1085-1092
Hyperlink http://www.sciencedirect.com/science/article/pii/S0925963510001573
Review anderes

In this paper, diamond like carbon (DLC) films were coated on polyethylene terephthalate (PET) film substrate as a function of biasing voltage using plasma enhanced chemical vapour deposition. The surface morphology of the DLC films was analyzed by scanning electron microscopy and atomic force microscopy. The chemical state and structure of the films were analyzed by X-ray photoelectrons spectroscopy and Raman spectroscopy. The micro hardness of the DLC films was also studied. The surface energy of interfacial tension between the DLC and blood protein was investigated using contact angle measurements. In addition, the blood compatibility of the films was examined by in vitro tests. For a higher fraction of sp3 content, maximum hardness and surface smoothness of the DLC films were obtained at an optimized biasing potential of − 300 V. The in vitro results showed that the blood compatibility of the DLC coated PET film surfaces got enhanced significantly.