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A Highly Stable Electrochemical Scanning Tunneling Microscope
Zhigang Xia,Jihao Wang,Yubin Hou,Qingyou Lu
Author NameAffiliationE-mail
Zhigang Xia High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Tech-nology of China, Hefei 230026, ChinaHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China  
Jihao Wang High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Tech-nology of China, Hefei 230026, ChinaHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China  
Yubin Hou High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Tech-nology of China, Hefei 230026, China  
Qingyou Lu High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Tech-nology of China, Hefei 230026, ChinaHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China qxl@ustc.edu.cn 
Abstract:
We demonstrate a home-built electrochemical scanning tunneling microscope (ECSTM). The ECSTM exhibits highly stable performance. The drifting rates in XY and Z directions of the ECSTM are about 67 and 55.6 pm/min, respectively. Moreover, a specially designed scanner unit successfully solves the well-known problem of large leakage current in high humidity atmosphere. The mechanical structure of the ECSTM is described in detail. The excellent performances of the system are demonstrated by the measured STM images (in copper sulfate solution), including clean and well-ordered large area morphology of Au(111) and the atomically resolved image of highly oriented pyrolytic graphite.
Key words:  Scanning tunneling microscope, Electrochemistry, Highly stable
FundProject:
高稳定电化学扫描隧道显微镜研制
夏志刚,王季浩,侯玉斌,陆轻铀*
摘要:
展示了一台自制的电化学扫描隧道显微镜. 这台电化学STM具有很高的稳定性,它在XY平面和Z方向的漂移速率分别为每分钟67和55.6 pm/min. 另外,特殊设计的扫描管部件有效地避免了在高湿度的环境中大漏电电流的产生. 详细描述了这台电化学STM的机械结构.通过在硫酸铜溶液中测量STM图像证明这套系统的优异性能,得到了大范围干净有序的Au(111)表面和高分辨的高聚石墨原子图像.
关键词:  扫描隧道显微镜,电化学,高稳定
DOI:10.1063/1674-0068/28/cjcp1410174
分类号: