Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate

Surface plasmon resonance (SPR) sensors based on a silver film suffer from signal degradation due to silver oxidation in aqueous sensing environments. To overcome this limitation, we fabricated the planar plasmonic substrate employing an atomic MoS(2) layer on a silver surface. Successful production...

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Detalles Bibliográficos
Autores principales: Kim, Nak-Hyeon, Choi, Munsik, Kim, Tae Woo, Choi, Woong, Park, Sang Yoon, Byun, Kyung Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514981/
https://www.ncbi.nlm.nih.gov/pubmed/31010067
http://dx.doi.org/10.3390/s19081894
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author Kim, Nak-Hyeon
Choi, Munsik
Kim, Tae Woo
Choi, Woong
Park, Sang Yoon
Byun, Kyung Min
author_facet Kim, Nak-Hyeon
Choi, Munsik
Kim, Tae Woo
Choi, Woong
Park, Sang Yoon
Byun, Kyung Min
author_sort Kim, Nak-Hyeon
collection PubMed
description Surface plasmon resonance (SPR) sensors based on a silver film suffer from signal degradation due to silver oxidation in aqueous sensing environments. To overcome this limitation, we fabricated the planar plasmonic substrate employing an atomic MoS(2) layer on a silver surface. Successful production of a large-area MoS(2) monolayer blocks the penetration of oxygen and water molecules. In addition, we theoretically and experimentally found that MoS(2) layer on the silver film can improve the SPR sensitivity and stability significantly. In this study, the proposed SPR substrate has the potential to provide highly enhanced sensor platforms for surface-limited molecular detections.
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spelling pubmed-65149812019-05-30 Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate Kim, Nak-Hyeon Choi, Munsik Kim, Tae Woo Choi, Woong Park, Sang Yoon Byun, Kyung Min Sensors (Basel) Article Surface plasmon resonance (SPR) sensors based on a silver film suffer from signal degradation due to silver oxidation in aqueous sensing environments. To overcome this limitation, we fabricated the planar plasmonic substrate employing an atomic MoS(2) layer on a silver surface. Successful production of a large-area MoS(2) monolayer blocks the penetration of oxygen and water molecules. In addition, we theoretically and experimentally found that MoS(2) layer on the silver film can improve the SPR sensitivity and stability significantly. In this study, the proposed SPR substrate has the potential to provide highly enhanced sensor platforms for surface-limited molecular detections. MDPI 2019-04-21 /pmc/articles/PMC6514981/ /pubmed/31010067 http://dx.doi.org/10.3390/s19081894 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
Kim, Nak-Hyeon
Choi, Munsik
Kim, Tae Woo
Choi, Woong
Park, Sang Yoon
Byun, Kyung Min
Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title_full Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title_fullStr Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title_full_unstemmed Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title_short Sensitivity and Stability Enhancement of Surface Plasmon Resonance Biosensors based on a Large-Area Ag/MoS(2) Substrate
title_sort sensitivity and stability enhancement of surface plasmon resonance biosensors based on a large-area ag/mos(2) substrate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514981/
https://www.ncbi.nlm.nih.gov/pubmed/31010067
http://dx.doi.org/10.3390/s19081894
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