中文摘要：

用离子束辅助沉积（IBAD）方法在碳纳米管表面制备银膜。用琼脂平板法测试了抗菌率,测试菌种为革兰氏阴性大肠杆菌（E.coil）和革兰氏阳性金黄色葡萄球菌（S.aureus）;用扫描电子显微镜（SEM）观测了镀银碳纳米管的微观形貌;用能量散射X射线谱（EDX）分析了镀银碳纳米管表面元素的原子百分比;用X射线光电子能谱（XPS）分析了镀银碳纳米管的表面元素的价态。研究结果表明,镀银碳纳米管具有优良的抗菌性能,且比在热解碳上镀银样品的抗菌性强。

英文摘要：

A silver layer is coated on carbon nanotubes （CNTs） by ion beam assisted deposition （IBAD） method. Standard agar dilution method is used to test antibacterial rate. E. coil and S. aureus bacteria were chose as test bacterial species. The structure and the chemical states are investigated by scanning electron microscope （SEM）, energy dispersive X-ray spectroscopy （EDX）, X-ray photoelectron spectroscopy （XPS）. The results show that silver coated CNTs possesses stronger antibacterial rate than that of silver coated pyrocarbon indicating that the silver coated CNTs may be a new candidate for artificial heart valves.