Characteristic of silver doped DLC films on surface properties and protein adsorption

被引：94

作者：

Choi, Heon Woong ^{[1
,2
]}

Dauskardt, Reinhold H. ^{[2
]}

Lee, Seung-Cheol ^{[3
]}

Lee, Kwang-Ryeol ^{[3
]}

Oh, Kyu Hwan ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[3] Korea Inst Sci & Technol, Future Technol Res Div, Seoul 130650, South Korea

来源：

关键词：

diamond-like carbon (DLC); protein adsorption; surface energy; wettability;

D O I：

10.1016/j.diamond.2007.12.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ag-incorporated diamond-like carbon (DLC) films were prepared on Si substrate using a hybrid deposition system composed of an end-Hall-type hydrocarbon ion gun and a silver DC magnetron sputter source. Ag was selected due to their potential values of biomaterial. The concentration of Ag in the films was varied from 0.1 to 9.7 at.% by controlling the fraction of Ar in the reaction gas mixture with benzene. In order to understand the influence of incorporated Ag on wettability, the surface energy and the protein adsorption as an indirect haemo-compatibility were measured. The surface energy of the Ag-incorporated DLC film decreased gradually with the increase of the Ag concentration. The haemo-compatibility was examined by the adsorption ratio of albumin/fibrinogen as an indirect method and improved with the increase of Ag concentration. The surface and biological behaviors of the films will be discussed in terms of the atomic bond characteristic and microstructure induced by Ag incorporation. Our results demonstrate that the Ag-incorporated DLC films are potentially useful as biomedical devices having good haemo-compatibility and hydrophobic characteristics. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：252 / 257

页数：6

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