Molybdenum Nanoscrews: A Novel Non-coinage-Metal Substrate for Surface-Enhanced Raman Scattering

被引：10

作者：

An, Di ^{[1
]}

Shen, Yan ^{[1
]}

Wen, Jinxiu ^{[1
]}

Zheng, Zebo ^{[1
]}

Chen, Jun ^{[1
]}

She, Juncong ^{[1
]}

Chen, Huanjun ^{[1
]}

Deng, Shaozhi ^{[1
]}

Xu, Ningsheng ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangdong Prov Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

NANO-MICRO LETTERS | 2017年 / 9卷 / 01期

基金：

国家教育部博士点专项基金资助; 中国国家自然科学基金;

关键词：

Surface-enhanced Raman scattering (SERS); Molybdenum nanoscrews; Quasi-one-dimensional nanostructures; Electric field enhancements; LIGHT-SCATTERING; SPECTROSCOPY; ELECTRODES; PLATINUM; PYRIDINE; ARRAYS; DIMERS; SERS;

D O I：

10.1007/s40820-016-0104-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

For the first time, Mo nanoscrew was cultivated as a novel non-coinage-metal substrate for surface-enhanced Raman scattering (SERS). It was found that the nanoscrew is composed of many small screw threads stacking along its length direction with small separations. Under external light excitation, strong electromagnetic coupling was initiated within the gaps, and many hot-spots formed on the surface of the nanoscrew, which was confirmed by high-resolution scanning near-field optical microscope measurements and numerical simulations using finite element method. These hot-spots are responsible for the observed SERS activity of the nanoscrews. Raman mapping characterizations further revealed the excellent reproducibility of the SERS activity. Our findings may pave the way for design of low-cost and stable SERS substrates.

引用

页数：10

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