期刊
SURFACE & COATINGS TECHNOLOGY
卷 202, 期 10, 页码 2093-2102出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2007.08.060
关键词
hydroxyapatite coating; surface analysis; surface energy; bacterial adhesion; electron beam; surface modification
Here, the authors report on surface free energy modulation of a hydroxyapatite-coated titanium femoral implant that is performed by a newly-developed method using a low-energy electron irradiation. They observe pronounced increase of hydrophobicity of irradiated samples that occurs in several stages and is characterized by various mechanisms. Bacterial adhesion on electron modified hydroxyapatite samples is studied, by considering different approaches. The authors show that bacterial adherence is selective and depends on the surface free energy components, which were determined from detailed surface free energy analysis. The selective bacterial adhesion, together with the ability to define the surface energy properties, suggests that this newly-developed method opens an avenue for protection of implants from bacterial infections. (c) 2007 Elsevier B.V All rights reserved.
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