Multiple plasmon couplings in 3D hybrid Au-nanoparticles-decorated Ag nanocone arrays boosting highly sensitive surface enhanced Raman scattering

被引：38

作者：

Zuo, Zewen ^{[1
]}

Sun, Lianye ^{[1
]}

Guo, Yongbin ^{[1
]}

Zhang, Lujun ^{[1
]}

Li, Junhu ^{[1
]}

Li, Kuanguo ^{[1
]}

Cui, Guanglei ^{[1
]}

机构：

[1] Anhui Normal Univ, Sch Phys & Elect Informat, Anhui Prov Key Lab Optoelect Mat Sci & Technol OE, Key Lab Funct Mol Solids,Minist Educ, Wuhu 241002, Peoples R China

来源：

NANO RESEARCH | 2022年 / 15卷 / 01期

基金：

中国国家自然科学基金;

关键词：

multiple plasmon coupling; electric field enhancement; nanocone array; three-dimensional hybrid; surface enhanced Raman scattering (SERS) substrate; FACILE FABRICATION; SERS SUBSTRATE; SPECTROSCOPY; TRANSPARENT; RESONANCES; MEMBRANES; HOTSPOTS;

D O I：

10.1007/s12274-021-3477-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Plasmon coupling is an essential strategy to realize strong local electromagnetic (EM) field which is crucial for high-performance plasmonic devices. In this work, multiple plasmon couplings are demonstrated in three-dimensional (3D) hybrid plasmonic systems composed of polydimethylsiloxane-supported ordered silver nanocone (AgNC) arrays decorated with high-density gold nanoparticles (AuNPs) which are fabricated by a template-assisted physical vapor deposition process. Strong interparticle coupling, particle-film coupling, inter-cone coupling, and particle-cone coupling are revealed by numerical simulations in such composite nanostructures, which produce intense and high-density EM hot spots, boosting highly sensitive and reproducible surface enhanced Raman scattering (SERS) detection with an enhancement factor of similar to 1.74 x 10(8). Furthermore, a linear correlation between logarithmic Raman intensity and logarithmic concentration of probe molecules is observed in a large concentration range. These results offer new ideas to develop novel plasmonic devices, and provide alternative strategy to realize flexible and high-performance SERS sensors for trace molecule detection and quantitative analysis.

引用

页码：317 / 325

页数：9

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