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A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection
A silver nanoparticle-modified evanescent field optical fiber sensor based on a MEMS microchannel chip has been successfully fabricated. Experimental results show that the sensor response decreases linearly with increasing concentration of analyte. Over a range of methylene blue concentrations from...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658787/ https://www.ncbi.nlm.nih.gov/pubmed/23519353 http://dx.doi.org/10.3390/s130303986 |
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author | Luo, Ji Yao, Jun Lu, Yonggang Ma, Wenying Zhuang, Xuye |
author_facet | Luo, Ji Yao, Jun Lu, Yonggang Ma, Wenying Zhuang, Xuye |
author_sort | Luo, Ji |
collection | PubMed |
description | A silver nanoparticle-modified evanescent field optical fiber sensor based on a MEMS microchannel chip has been successfully fabricated. Experimental results show that the sensor response decreases linearly with increasing concentration of analyte. Over a range of methylene blue concentrations from 0 to 0.4 μmol/mL, the sensor response is linear (R = 0.9496). A concentration variation of 0.1 μmol/mL can cause an absorbance change of 0.402 dB. Moreover, the optical responses of the same sensing fiber without decoration and modified with silver nanoparticles have also been compared. It can be observed that the output intensity of the Ag nanoparticle-modified sensor is enhanced and the sensitivity is higher. Meanwhile, the absorbance spectra are found to be more sensitive to concentration changes compared to the spectra of the peak wavelength. |
format | Online Article Text |
id | pubmed-3658787 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-36587872013-05-30 A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection Luo, Ji Yao, Jun Lu, Yonggang Ma, Wenying Zhuang, Xuye Sensors (Basel) Article A silver nanoparticle-modified evanescent field optical fiber sensor based on a MEMS microchannel chip has been successfully fabricated. Experimental results show that the sensor response decreases linearly with increasing concentration of analyte. Over a range of methylene blue concentrations from 0 to 0.4 μmol/mL, the sensor response is linear (R = 0.9496). A concentration variation of 0.1 μmol/mL can cause an absorbance change of 0.402 dB. Moreover, the optical responses of the same sensing fiber without decoration and modified with silver nanoparticles have also been compared. It can be observed that the output intensity of the Ag nanoparticle-modified sensor is enhanced and the sensitivity is higher. Meanwhile, the absorbance spectra are found to be more sensitive to concentration changes compared to the spectra of the peak wavelength. Molecular Diversity Preservation International (MDPI) 2013-03-21 /pmc/articles/PMC3658787/ /pubmed/23519353 http://dx.doi.org/10.3390/s130303986 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Luo, Ji Yao, Jun Lu, Yonggang Ma, Wenying Zhuang, Xuye A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title | A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title_full | A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title_fullStr | A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title_full_unstemmed | A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title_short | A Silver Nanoparticle-Modified Evanescent Field Optical Fiber Sensor for Methylene Blue Detection |
title_sort | silver nanoparticle-modified evanescent field optical fiber sensor for methylene blue detection |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658787/ https://www.ncbi.nlm.nih.gov/pubmed/23519353 http://dx.doi.org/10.3390/s130303986 |
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