Cargando…

Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure

In this work, a surface plasmon resonance (SPR) biosensor based on two-dimensional transition metal dichalcogenides (TMDCs) is proposed to improve the biosensor’s sensitivity. In this sensor, different kinds of two-dimensional TMDCs are coated on both surfaces of metal film. By optimizing the struct...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhao, Xiang, Huang, Tianye, Ping, Perry Shum, Wu, Xu, Huang, Pan, Pan, Jianxing, Wu, Yiheng, Cheng, Zhuo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6068701/
https://www.ncbi.nlm.nih.gov/pubmed/29954134
http://dx.doi.org/10.3390/s18072056
_version_ 1783343330033139712
author Zhao, Xiang
Huang, Tianye
Ping, Perry Shum
Wu, Xu
Huang, Pan
Pan, Jianxing
Wu, Yiheng
Cheng, Zhuo
author_facet Zhao, Xiang
Huang, Tianye
Ping, Perry Shum
Wu, Xu
Huang, Pan
Pan, Jianxing
Wu, Yiheng
Cheng, Zhuo
author_sort Zhao, Xiang
collection PubMed
description In this work, a surface plasmon resonance (SPR) biosensor based on two-dimensional transition metal dichalcogenides (TMDCs) is proposed to improve the biosensor’s sensitivity. In this sensor, different kinds of two-dimensional TMDCs are coated on both surfaces of metal film. By optimizing the structural parameters, the angular sensitivity can reach as high as 315.5 Deg/RIU with 7-layers WS(2) and 36 nm Al thin film, which is 3.3 times of the conventional structure based on single Al thin film. We also obtain maximum phase sensitivity (3.85 × 10(6) Deg/RIU) with bilayer WS(2) and 35 nm Al thin film. The phase sensitivity can be further improved by employing Ag and removing air layer. The proposed configuration is of great potential for biochemical sensing.
format Online
Article
Text
id pubmed-6068701
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-60687012018-08-07 Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure Zhao, Xiang Huang, Tianye Ping, Perry Shum Wu, Xu Huang, Pan Pan, Jianxing Wu, Yiheng Cheng, Zhuo Sensors (Basel) Article In this work, a surface plasmon resonance (SPR) biosensor based on two-dimensional transition metal dichalcogenides (TMDCs) is proposed to improve the biosensor’s sensitivity. In this sensor, different kinds of two-dimensional TMDCs are coated on both surfaces of metal film. By optimizing the structural parameters, the angular sensitivity can reach as high as 315.5 Deg/RIU with 7-layers WS(2) and 36 nm Al thin film, which is 3.3 times of the conventional structure based on single Al thin film. We also obtain maximum phase sensitivity (3.85 × 10(6) Deg/RIU) with bilayer WS(2) and 35 nm Al thin film. The phase sensitivity can be further improved by employing Ag and removing air layer. The proposed configuration is of great potential for biochemical sensing. MDPI 2018-06-27 /pmc/articles/PMC6068701/ /pubmed/29954134 http://dx.doi.org/10.3390/s18072056 Text en © 2018 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
Zhao, Xiang
Huang, Tianye
Ping, Perry Shum
Wu, Xu
Huang, Pan
Pan, Jianxing
Wu, Yiheng
Cheng, Zhuo
Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title_full Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title_fullStr Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title_full_unstemmed Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title_short Sensitivity Enhancement in Surface Plasmon Resonance Biochemical Sensor Based on Transition Metal Dichalcogenides/Graphene Heterostructure
title_sort sensitivity enhancement in surface plasmon resonance biochemical sensor based on transition metal dichalcogenides/graphene heterostructure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6068701/
https://www.ncbi.nlm.nih.gov/pubmed/29954134
http://dx.doi.org/10.3390/s18072056
work_keys_str_mv AT zhaoxiang sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT huangtianye sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT pingperryshum sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT wuxu sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT huangpan sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT panjianxing sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT wuyiheng sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure
AT chengzhuo sensitivityenhancementinsurfaceplasmonresonancebiochemicalsensorbasedontransitionmetaldichalcogenidesgrapheneheterostructure