Numerical investigation of a grating and graphene-based multilayer surface plasmon resonance biosensor

Islam, MS and Kouzani, AZ 2014, Numerical investigation of a grating and graphene-based multilayer surface plasmon resonance biosensor, Journal of modern optics, vol. 61, no. 15, pp. 1209-1218, doi: 10.1080/09500340.2014.928373.

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Title Numerical investigation of a grating and graphene-based multilayer surface plasmon resonance biosensor
Author(s) Islam, MS
Kouzani, AZORCID iD for Kouzani, AZ orcid.org/0000-0002-6292-1214
Journal name Journal of modern optics
Volume number 61
Issue number 15
Start page 1209
End page 1218
Publisher Taylor and Francis
Place of publication Abingdon, Eng.
Publication date 2014-09-02
ISSN 0950-0340
1362-3044
Keyword(s) dispersion relation
Kretschmann configuration
Maxwell's equations
multilayer grating-graphene biosensor
sensitivity enhancement
Science & Technology
Physical Sciences
Optics
METALLIC NANOWIRES
RESOLUTION
NANOPARTICLES
SENSOR
Summary A multilayer surface plasmon resonance biosensor (SPRB) incorporating a grating-graphene configuration is investigated for enhanced sensitivity. The numerical analysis of the impact of integrating a periodic array of subwavelength grating on top of a layer of graphene sheet for improving sensitivity is presented. The result of monitoring the biomolecular interactions of DNA hybridization is compared against the outcome of the conventional SPRB, a graphene-based multilayer SPRB, and a multilayer layer grating SPRB, and is mathematically validated. It is demonstrated that the inclusion of a grating and graphene layer on top of the gold thin film is an excellent candidate for a highly sensitive SPRB. To achieve further enhancement of sensitivity, the subwavelength grating is numerically optimized against its geometry including grating configurations (rectangular, sinusoidal, and triangular), grating depth, volume factor, and grating period. © 2014 Taylor & Francis.
Language eng
DOI 10.1080/09500340.2014.928373
Field of Research 090304 Medical Devices
Socio Economic Objective 861502 Medical Instruments
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Taylor and Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30072119

Document type: Journal Article
Collection: School of Engineering
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