Year: 2013
Journal: Journal of Electrochemical Society, 160, pp H392-H397, 20130926
Authors: Chiung-Fang Haung, Yu-Hao Chan, Li-Kai Chen, Chung-Ming Liu, Wei-Chen Huang, Shih-Fu Ou, Keng-Liang Ou, Duen-Jeng Wang
Organizations: School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan, Division of Family and Operative Dentistry, Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan, Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan, School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan, Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan, Department of Dentistry, Taipei City Hospital, Taipei 103, Taiwan, Department of Chemical and Material Engineering, LungHwa University of Science and Technology, Taoyuan 306, Taiwan, Graduate School of Engineering Technology, LungHwa University of Science and Technology, Taoyuan 306, Taiwan, Department of Dentistry, Sijhih Cathay General Hospital, Taipei 221, Taiwan, Department of Dentistry, Cathy General Hospital, Taipei 106, Taiwan, Graduate Institute of Biomedical Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Dentistry, Taipei Medical University-Shuang-Ho Hospital, Taipei 235, Taiwan, Department of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
Gas mixtures comprising H2:Ar:CH4 at various flow ratios were fed to a microwave plasma system during the preparation ofTi implants to form anticoagulation and antibacterial films composed of carbon-based nanowires (NWs). When the H2-flowratio was increased, a phase transition (amorphization (α) → (α + quasi-α) → (α + quasi-α + NWs) → (α + quasi-α+ NWs + multilayer-like NWs (MLNWs)) → (NWs/MLNWs with nanograins)) was observed within the films formed on Tiduring the microwave plasma discharge. In addition to producing a nanostructural film made of NWs, plasma carbonization causedthe formation of an NW/nanograin phase that can enhance the hydrophobic and anticoagulation properties. Moreover, antibacterialtests also demonstrated the crucial role played by the hydrophobic films made of NWs in improving the antibacterial performanceof the implants. The enhanced anticoagulation and antibacterial properties render the nanostructural films made of NWs as one ofthe promising materials that can be used in the heart valves, coronary artery stents, and dental implant surgical kits.
