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Sensors 2014, 14(10), 18701-18710; doi:10.3390/s141018701

Optical Fiber Sensor Based on Localized Surface Plasmon Resonance Using Silver Nanoparticles Photodeposited on the Optical Fiber End

1
División de Ingenierías, Universidad Politécnica de Tulancingo, UPT, C.P. 43629 Hidalgo, Mexico
2
ICUAP, Benemérita Universidad Autónoma de Puebla, BUAP, C.P. 72050 Puebla, Mexico
*
Author to whom correspondence should be addressed.
Received: 1 July 2014 / Revised: 19 September 2014 / Accepted: 25 September 2014 / Published: 9 October 2014
(This article belongs to the Special Issue Nanoparticle-Based Biosensors)
View Full-Text   |   Download PDF [1730 KB, uploaded 9 October 2014]   |  

Abstract

This paper reports the implementation of an optical fiber sensor to measure the refractive index in aqueous media based on localized surface plasmon resonance (LSPR). We have used a novel technique known as photodeposition to immobilize silver nanoparticles on the optical fiber end. This technique has a simple instrumentation, involves laser light via an optical fiber and silver nanoparticles suspended in an aqueous medium. The optical sensor was assembled using a tungsten lamp as white light, a spectrometer, and an optical fiber with silver nanoparticles. The response of this sensor is such that the LSPR peak wavelength is linearly shifted to longer wavelengths as the refractive index is increased, showing a sensitivity of 67.6 nm/RIU. Experimental results are presented. View Full-Text
Keywords: localized surface plasmon resonance; photodeposition; fiber optic sensor; refractive index; silver nanoparticles localized surface plasmon resonance; photodeposition; fiber optic sensor; refractive index; silver nanoparticles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ortega-Mendoza, J.G.; Padilla-Vivanco, A.; Toxqui-Quitl, C.; Zaca-Morán, P.; Villegas-Hernández, D.; Chávez, F. Optical Fiber Sensor Based on Localized Surface Plasmon Resonance Using Silver Nanoparticles Photodeposited on the Optical Fiber End. Sensors 2014, 14, 18701-18710.

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