Characterization of Au Ring Microelectrode with Cyclic Voltammetry and AC Impedance Spectroscopy

摘要：

　　In this paper Au ring microelectrodes are fabricated and characterized.With an optical fibre core as a substrate Au film with thickness 300nm was coated by an electron beam evaporation system,then on this Au coated substrate a parylene passivation layer was deposited,forming the desired Au ring microelectrode.Scanning electron microscopy (SEM) was used to characterize the quality of the deposited films and the adhesion at the interfaces.With a CHI660D electrochemical workstation the electrochemical characterizations were performed at room temperature in a conventional three-electrode system.Cyclic voltammograms as a function of scan rate were sigmoidal form,a typical electrochemical response of microelectrodes.AC impedance frequency spectrum of the fabricated Au ring microelectrode was also obtained in a reversible system,and good agreement was found with the Randels-type equivalent circuit.

关键词： Electron beam evaporation system Vacuum deposition system Scanning electron microscopy Cyclic voltammetry AC impedance frequency spectrum

作者: Weixuan Jing Fan Zhou Lujia Chen Zhuangde Jiang Lingling Niu Bing Wang Han Qi

作者单位: State Key Laboratory for Manufacturing Systems Engineering Xian Jiaotong University 710049, Xian, China

会议类型: 国际会议

会议名称: 2013 International Symposium on Assembly and Manufacturing(2013装配与制造国际专题会议)

会议地点: 西安

会议语种:英文

页码: 125-127

在线出版日期: 2013-07-01（万方平台首次上网日期，不代表论文的发表时间）