表面微结构金属干式电极制造及细菌粘附性能研究

发布时间：2018-04-17 23:15

本文选题：金属干式电极 + 表面微结构　；参考：《光电工程》2017年12期

【摘要】：为开发出高性能生物医用干式电极,提出了利用激光微铣-重铸加工方法,实现了表面具有微结构阵列特征的新型金属干式电极的制造成形。在分析电极表面微观形貌的基础上,研究了电极表面的润湿性能,并重点研究了扫描间距、扫描速度和扫描次数等加工参数对大肠杆菌粘附性能的影响规律。研究结果表明:在一定工艺参数条件下所加工出具有微结构阵列特征的电极的接触角可达150°以上,表现出超疏水的特性。在不同扫描间隙和扫描次数条件下加工出的电极对大肠杆菌的粘附性能具有较大影响,在选择0.1 mm扫描间隙时,电极表面粘附的大肠杆菌数量最少,适当增加扫描次数,也能够有效地减少电极表面大肠杆菌的粘结,从而发挥较好的抗菌效果。通过改变扫描速度加工出的电极则对大肠杆菌的粘附性能影响不大。
[Abstract]:In order to develop high performance biomedical dry electrode, a new type of metal dry electrode with micro-structure array on the surface was fabricated by laser micro-milling and recasting.The wettability of the electrode surface was studied based on the analysis of the micromorphology of the electrode surface, and the effects of the processing parameters such as scanning distance, scanning speed and scanning times on the adhesion properties of Escherichia coli were studied.The results show that the contact angle of the electrode with microstructural array can reach 150 掳under certain process parameters, which shows superhydrophobicity.The electrode processed under different scanning gap and scanning times had great influence on the adhesion of Escherichia coli. When 0.1 mm scanning gap was selected, the amount of Escherichia coli adhered on the electrode surface was the least, and the scanning times were increased appropriately.It can also effectively reduce the adhesion of Escherichia coli on the electrode surface, so as to play a better antibacterial effect.The electrode produced by changing the scanning speed has little effect on the adhesion of Escherichia coli.
【作者单位】：厦门大学机电工程系;江南大学包装工程系;厦门大学附属中山医院创伤骨科;
【基金】：国家自然科学基金面上项目(51475397) 厦门市科技计划项目(3502Z20173024) 厦门市科技惠民项目(3502Z20154017)
【分类号】：R318;TN249

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