Remote Chemical Sensing by SERS with Self-Assembly Plasmonic Nanoparticle Arrays on a Fiber

被引：6

作者：

Zhang, Xin ^{[1
]}

Zhang, Kunyi ^{[1
]}

von Bredow, Hasso ^{[2
]}

Metting, Christopher ^{[2
]}

Atanasoff, George ^{[2
]}

Briber, Robert M. ^{[1
]}

Rabin, Oded ^{[1
,3
]}

机构：

[1] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[2] Accustrata Inc, Rockville, MD USA

[3] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA

来源：

FRONTIERS IN PHYSICS | 2022年 / 9卷

基金：

美国国家科学基金会;

关键词：

surface enhanced Raman spectroscopy; remote sensing; fiber optics; gold nanoparticles; self-assembly; optical metamaterial; fused silica fiber; enhancement factor; ENHANCED RAMAN-SCATTERING; SINGLE-MOLECULE; PROBE; SENSOR;

D O I：

10.3389/fphy.2021.752943

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An optical fiber was modified at the tip with a self-assembled plasmonic metamaterial that acts as a miniature surface-enhanced Raman spectroscopy (SERS) substrate. This optical fiber-based device co-localizes the laser probe signal and the chemical analyte at a distance remote from the spectrometer, and returns the scattered light signal to the spectrometer for analysis. Remote SERS chemical detection is possible in liquids and in dried samples. Under laboratory conditions, the analyte SERS signal can be separated from the background signal of the fiber itself and the solvent. An enhancement factor greater than 35,000 is achieved with a monolayer of the SERS marker 4-aminothiophenol.

引用

页数：6

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