A high stability and repeatability electrochemical scanning tunneling microscope
A high stability and repeatability electrochemical scanning tunneling microscope
复制标题
高稳定性和重复性电化学扫描隧道显微镜
DOI：
10.1063/1.4902975
复制
发表时间：
2014-12-01
影响因子：
1.6
通讯作者：
Lu, Qingyou
中科院分区：
文献类型：
--
作者：
Xia, Zhigang;Wang, Jihao;Lu, Qingyou
We present a home built electrochemical scanning tunneling microscope (ECSTM) with very high stability and repeatability. Its coarse approach is driven by a closely stacked piezo motor of Gecko-Drive type with four rigid clamping points, which enhances the rigidity, compactness, and stability greatly. It can give high clarity atomic resolution images without sound and vibration isolations. Its drifting rates in XY and Z directions in solution are as low as 84 pm/min and 59 pm/min, respectively. In addition, repeatable coarse approaches in solution within 2 mm travel distance show a lateral deviation less than 50 nm. The gas environment can be well controlled to lower the evaporation rate of the cell, thus reducing the contamination and elongating the measurement time. Atomically resolved SO42-image on Au (111) work electrode is demonstrated to show the performance of the ECSTM. (C) 2014 AIP Publishing LLC.
