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In vitro Cyto and Blood Compatibility of Titanium Containing Diamond-Like Carbon Prepared by Hybrid Sputtering Method

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Plasma Science and Technology 2012年第9期14卷 829-836页

作者： Krishnasamy NAVANEETHA PANDIYARAJ jan heeg Andreas LAMPKA Fabian JUNGE Torsten BARFELS Marion WIENECKE Young Ha RHEE Hyoung Woo KIM Department of Physics Sri Shakthi Institute of Engineering and Technology Institute of Surface and Thin Film Technology Hochschule WismarGermany Department of Microbiology College of Bioscience&BiotechnologyChungnam National University

In recent years, diamond-like carbon films （DLC） have been given more attention in research in the biomedical industry due to their potential application as surface coating on biomedical materials such as metals and polymer substrates. There are many ways to prepare metal containing DLC films deposited on polymeric film substrates, such as coatings from car- bonaceous precursors and some means that incorporate other elements. In this study, we in- vestigated both the surface and biocompatible properties of titanium containing DLC （Ti-DLC） films. The Ti-DLC films were prepared on the surface of poly （ethylene terephthalate）（PET） film as a function of the deposition power level using reactive sputtering technique. The films＇ hydrophilicity was studied by contact angle and surface energy tests. Their surface morphology was studied by scanning electron microscopy （SEM） and atomic force microscopy （AFM）. Their elemental chemical composition was analyzed using energy dispersive X-spectra （EDX） and X-ray photoelectron spectroscopy （XPS）. Their blood and cell compatibility was studied by in vitro tests, including tests on platelet adhesion, thrombus formation, whole blood clotting time and osteoblast cell compatibility. Significant changes in the morphological and chemical composition of the Ti-DLC films were observed and found to be a function of the deposition level. These morphological and chemical changes reduced the interfacial tension between Ti-DLC and blood proteins as well as resisted the adhesion and activation of platelets on the surface of the Ti-DLC films. The cell compatibility results exhibited significant growth of osteoblast cells on the surface of Ti incorporated DLC film compared with that of DLC film surface.

关键词： Ti-DLC hybrid reactive sputtering technique surface analysis cyto and blood compatibility

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