Note: Automated electrochemical etching and polishing of silver scanning tunneling microscope tips

被引:19
作者
Sasaki, Stephen S. [1 ]
Perdue, Shawn M. [1 ]
Perez, Alejandro Rodriguez [1 ]
Tallarida, Nicholas [1 ]
Majors, Julia H. [2 ]
Apkarian, V. Ara [1 ]
Lee, Joonhee [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
[2] Univ Calif Irvine, Dept Phys, Irvine, CA 92697 USA
基金
美国国家科学基金会;
关键词
ENHANCED RAMAN-SPECTROSCOPY; FIELD-ION MICROSCOPY;
D O I
10.1063/1.4822115
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Fabrication of sharp and smooth Ag tips is crucial in optical scanning probe microscope experiments. To ensure reproducible tip profiles, the polishing process is fully automated using a closed-loop laminar flow system to deliver the electrolytic solution to moving electrodes mounted on a motorized translational stage. The repetitive translational motion is controlled precisely on the mu m scale with a stepper motor and screw-thread mechanism. The automated setup allows reproducible control over the tip profile and improves smoothness and sharpness of tips (radius 27 +/- 18 nm), as measured by ultrafast field emission. (C) 2013 AIP Publishing LLC.
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页数:3
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