Optical fiber pH sensor based on gold nanoparticles into polymeric coatings

被引：4
|
作者：
Socorro, A. B. [1 ]
Rivero, Pedro J. [1 ]
Hernaez, M. [1 ]
Goicoechea, J. [1 ]
Matias, I. R. [1 ]
Arregui, F. J. [1 ]
机构：
[1] Univ Publ Navarra, Dept Elect & Elect Engn, Nanostruct Opt Devices Lab, Pamplona 31006, Spain
来源：
SMART SENSORS, ACTUATORS, AND MEMS VII; AND CYBER PHYSICAL SYSTEMS | 2015年 / 9517卷
关键词：
Optical fiber pH sensor; lossy mode resonance; localized surface plasmon resonance; gold nanoparticles; HUMIDITY; BIOSENSOR;
D O I：
10.1117/12.2179970
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A pH optical fiber sensor based on electromagnetic resonances generated in a waveguide-nanocoating interface is presented here. The incorporation of gold nanoparticles (AuNPs) into polymeric thin films has been deeply studied and the deposition of these thin-films onto an optical fiber core has been performed in order to obtain a resonance-based optical fiber device. The presence of both the metal nanoparticles and the polymers in the coating allows the generation of two different electromagnetic resonances: localized surface plasmon resonance (LSPR) and lossy mode resonance (LMR). These phenomena can be simultaneously observed in the transmitted spectrum. The resultant device has shown a high sensitivity to pH changes from pH 4.0 to pH 6.0, with a large dynamical range and a very fast response
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页数：6
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