Surface-enhanced Raman scattering substrates of high-density and high-homogeneity hot spots by magneto-metal nanoprobe assembling

被引：26

作者：

Zhang, Lu ^{[1
]}

Dong, Wen-Fei ^{[1
]}

Tang, Zhi-Yong ^{[2
]}

Song, Jun-Feng ^{[1
]}

Xia, Hong ^{[1
]}

Sun, Hong-Bo ^{[1
,3
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

[3] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

OPTICS LETTERS | 2010年 / 35卷 / 19期

基金：

中国国家自然科学基金;

关键词：

NANOPARTICLE; SPECTROSCOPY; SILVER;

D O I：

10.1364/OL.35.003297

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Binary naoparticles composed of a superparamagnetic Fe(3)O(4) core and an Au nanoshell were prepared via a high-temperature hydrolysis reaction followed by seed-mediated growth. The nanoprobes render simultaneous dual functions of both fast magnetic response and local surface plasmon resonance. Using these nanoprobes, analyte molecules can be easily biologically captured, magnetically concentrated, and analyzed by surface-enhanced Raman scattering (SERS). Particularly, the complex particles were assembled under magnetic force direction into a SERS substrate. It was found to possess both a high enhancement factor (10(6)) and high homogeneity of "hot spot" distribution (fluctuation less than 20% for a 1 mu m(2) area) with 4-aminothiophenol as the analyte. (C) 2010 Optical Society of America

引用

页码：3297 / 3299

页数：3

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