Current Applied Physics

Korean Physical Society (한국물리학회)
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Investigation on surface properties of $TiO_2$ films modified by DC glow discharge plasma

Pandiyaraj, K. Navaneetha;Selvarajan, V.;Pavese, Matteo;Falaras, Polycarpos;Tsoukleris, Dimitrios

  • Published : 20090800
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Abstract

In the present work, $TiO_2$ films deposited on polyethylene terephthalate substrates by dip coating technique were subsequently treated by DC glow discharge plasma as a function of discharge potential. Hydrophilicity of these $TiO_2$ film surfaces was analyzed by contact angle measurements. Atomic force microscopy (AFM) revealed changes in surface morphology of the plasma treated $TiO_2$ films. Modifications in structural and chemical composition of the $TiO_2$ films were detected by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The blood compatibility of $TiO_2$ films was studied by in vitro investigation which includes thrombus formation and whole blood clotting time analysis (WBCT). It was found that the plasma treatment results in blood compatibility enhancement attributed to the structural, chemical and morphological properties of the modified film surfaces.

Keywords

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