Characteristics of TiO2 Nanotube Arrays on Titanium Prepared by Anodization
Titania nanotube (NT) arrays with a length of 550nm were fabricated on the flat titanium substrate by anodization. The microstructure was identified by scanning electron microscope. The composition has been investigated with X-ray photoelectron microscopy. It also showed that, as compared with the flat surface, the density of Ti-OH groups on the NT surface has been increased. However, according to the contact angle goniometer, the hydrophilicity of the NT surface becomes worse than that of the flat surface. In addition, surface roughness was investigated by non-contact atomic force microscope. It demonstrated that the nano-roughness of NT arrays has been increased. More important is the relationship between contact angle and roughness factor have been analyzed based on the modified Youngs equation. These results indicate that the anodized NT structures may have provided an optimal surface roughness for promoting the bioactivity.
Dan Li Chengyun Ning Guoxin Tan Huade Zheng Yongmei Ge
College of Materials Science and Technology, South China University of Technology, Guangdong Provinc Guangdong University of Technology, Guangdong Province 510006, China
国际会议
长沙
英文
291-295
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）