Preparation of gold tips suitable for tip-enhanced Raman spectroscopy and light emission by electrochemical etching

被引：308
|
作者：
Ren, B [1 ]
Picardi, G
Pettinger, B
机构：
[1] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China
[2] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2004年 / 75卷 / 04期
关键词：
D O I：
10.1063/1.1688442
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We describe a method of preparing gold scanning tunneling microscopy (STM) tips by direct current electrochemical etching in concentrated HCl and ethanol solution. Gold tips with tip apex radius lower than 30 nm can be reproducibly prepared by this method. The influence of the solution composition, etching voltage on the surface structure, and sharpness has been investigated. These tips can be efficiently used for STM imaging, tip-enhanced Raman spectroscopy, and light emission investigations on the same sample. (C) 2004 American Institute of Physics.
引用
收藏
页码：837 / 841
页数：5
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