Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87543
Title: Sensitivity enhancement in surface plasmon resonance biochemical sensor based on transition metal dichalcogenides/graphene heterostructure
Authors: Zhao, Xiang
Huang, Tianye
Ping, Perry Shum
Wu, Xu
Huang, Pan
Pan, Jianxing
Wu, Yiheng
Cheng, Zhuo
Keywords: Transition Metal Dichalcogenides
Surface Plasmon Resonance
Issue Date: 2018
Source: Zhao, X., Huang, T., Ping, P. S., Wu, X., Huang, P., Pan, J., et al. (2018). Sensitivity enhancement in surface plasmon resonance biochemical sensor based on transition metal dichalcogenides/graphene heterostructure. Sensors, 18(7), 2056-.
Series/Report no.: Sensors
Abstract: 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 WS2 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 × 106 Deg/RIU) with bilayer WS2 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.
URI: https://hdl.handle.net/10356/87543
http://hdl.handle.net/10220/45414
ISSN: 1424-8220
DOI: http://dx.doi.org/10.3390/s18072056
Rights: © 2018 by The Author(s). 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/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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