Fabrication of silver tips for scanning tunneling microscope induced luminescence

被引：65

作者：

Zhang, C. ^{[1
]}

Gao, B. ^{[1
]}

Chen, L. G. ^{[1
]}

Meng, Q. S. ^{[1
]}

Yang, H. ^{[1
]}

Zhang, R. ^{[1
]}

Tao, X. ^{[1
]}

Gao, H. Y. ^{[1
]}

Liao, Y. ^{[1
]}

Dong, Z. C. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2011年 / 82卷 / 08期

关键词：

ENHANCED RAMAN-SPECTROSCOPY; LIGHT-EMISSION; PHOTON-EMISSION; METAL-SURFACES; GOLD TIPS; FLUORESCENCE;

D O I：

10.1063/1.3617456

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe a reliable fabrication procedure of silver tips for scanning tunneling microscope (STM) induced luminescence experiments. The tip was first etched electrochemically to yield a sharp cone shape using selected electrolyte solutions and then sputter cleaned in ultrahigh vacuum to remove surface oxidation. The tip status, in particular the tip induced plasmon mode and its emission intensity, can be further tuned through field emission and voltage pulse. The quality of silver tips thus fabricated not only offers atomically resolved STM imaging, but more importantly, also allows us to perform challenging "color" photon mapping with emission spectra taken at each pixel simultaneously during the STM scan under relatively small tunnel currents and relatively short exposure time. (C) 2011 American Institute of Physics. [doi:10.1063/1.3617456]

引用

页数：4

共 34 条

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