Highly reproducible tip-enhanced Raman scattering using an oxidized and metallized silicon cantilever tip as a tool for everyone

被引：50

作者：

Hayazawa, Norihiko ^{[1
,3
,4
]}

Yano, Taka-aki ^{[2
,4
,5
]}

Kawata, Satoshi ^{[1
,3
,4
,5
]}

机构：

[1] RIKEN, NanoPhoton Lab, Wako, Saitama 3510198, Japan

[2] Tokyo Inst Technol, Dept Elect Chem, Yokohama, Kanagawa 2268502, Japan

[3] RIKEN, Near Field NanoPhoton Res Team, Wako, Saitama 3510198, Japan

[4] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[5] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2012年 / 43卷 / 09期

关键词：

tip-enhanced Raman scattering; silicon cantilever; carbon nanotube; SCANNING OPTICAL MICROSCOPE; NANOSCALE CHEMICAL-ANALYSIS; COATED DIELECTRIC TIPS; SINGLE MOLECULES; FIELD ENHANCEMENT; SPECTROSCOPY; FLUORESCENCE; RESOLUTION; AMPLIFICATION; EXCITATION;

D O I：

10.1002/jrs.4032

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We have successfully improved the reproducibility of tip-enhancement effect on metallized silicon cantilever tips for characterization of carbon nanotubes. Plasmon resonance tuning relative to an excitation wavelength is crucial for efficient tip-enhancement, which is accomplished by thermal oxidization and subsequent metallization of commercial silicon tips. Because of the change of the refractive index of the tip from silicon to silicon dioxide, the plasmon resonance of the silver-coated tip is blue-shifted showing an enormous enhancement at 532 nm excitation. Highly reproducible tips exhibit an enhancement factor of >100 with a 100% yield. Because the tips are fabricated from commercially available silicon cantilever tips in a simple and robust way, our approach provides an important step of 'tip-enhanced Raman spectroscopy for everyone'. Copyright (C) 2012 John Wiley & Sons, Ltd.

引用

页码：1177 / 1182

页数：6

共 34 条

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