A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array

This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of a hexagonal periodic gold nanoring array. The effects of structural parameters on the extinction spectrum and refractive index (RI) sensitivity are analyzed to obtain optimal parameters. In particular, the RI...

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Detalles Bibliográficos
Autores principales: Liu, Hai, Chen, Cong, Zhang, Yanzeng, Bai, Bingbing, Tang, Shoufeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864681/
https://www.ncbi.nlm.nih.gov/pubmed/31694182
http://dx.doi.org/10.3390/s19214803
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author Liu, Hai
Chen, Cong
Zhang, Yanzeng
Bai, Bingbing
Tang, Shoufeng
author_facet Liu, Hai
Chen, Cong
Zhang, Yanzeng
Bai, Bingbing
Tang, Shoufeng
author_sort Liu, Hai
collection PubMed
description This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of a hexagonal periodic gold nanoring array. The effects of structural parameters on the extinction spectrum and refractive index (RI) sensitivity are analyzed to obtain optimal parameters. In particular, the RI sensitivity can reach 550.08 nm/RIU through improvement of the sensor structure, which is an increase of 17.4% over the original value. After coating a methane-sensitive membrane on the inner and outer surfaces of the gold rings, the methane concentration can be accurately measured with a gas sensitivity of −1.02 nm/%. The proposed method is also applicable to quantitative analyses of components concentration and qualitative analyses of gas composition.
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spelling pubmed-68646812019-12-23 A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array Liu, Hai Chen, Cong Zhang, Yanzeng Bai, Bingbing Tang, Shoufeng Sensors (Basel) Article This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of a hexagonal periodic gold nanoring array. The effects of structural parameters on the extinction spectrum and refractive index (RI) sensitivity are analyzed to obtain optimal parameters. In particular, the RI sensitivity can reach 550.08 nm/RIU through improvement of the sensor structure, which is an increase of 17.4% over the original value. After coating a methane-sensitive membrane on the inner and outer surfaces of the gold rings, the methane concentration can be accurately measured with a gas sensitivity of −1.02 nm/%. The proposed method is also applicable to quantitative analyses of components concentration and qualitative analyses of gas composition. MDPI 2019-11-05 /pmc/articles/PMC6864681/ /pubmed/31694182 http://dx.doi.org/10.3390/s19214803 Text en © 2019 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Hai
Chen, Cong
Zhang, Yanzeng
Bai, Bingbing
Tang, Shoufeng
A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title_full A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title_fullStr A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title_full_unstemmed A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title_short A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array
title_sort high-sensitivity methane sensor with localized surface plasmon resonance behavior in an improved hexagonal gold nanoring array
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864681/
https://www.ncbi.nlm.nih.gov/pubmed/31694182
http://dx.doi.org/10.3390/s19214803
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