Simulation and analysis of a sub-wavelength grating based multilayer surface plasmon resonance biosensor

Islam, Md. Saiful and Kouzani, Abbas Z. 2013, Simulation and analysis of a sub-wavelength grating based multilayer surface plasmon resonance biosensor, Journal of lightwave technology, vol. 31, no. 9, pp. 1388-1398.

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Title Simulation and analysis of a sub-wavelength grating based multilayer surface plasmon resonance biosensor
Author(s) Islam, Md. Saiful
Kouzani, Abbas Z.
Journal name Journal of lightwave technology
Volume number 31
Issue number 9
Start page 1388
End page 1398
Total pages 11
Publisher IEEE
Place of publication Piscataway, N.J.
Publication date 2013
ISSN 0733-8724
Keyword(s) Biosensor
S- parameter
grating
sensitivity enhancement
surface plasmon resonance
Summary This paper presents a subwavelength grating based multilayer surface plasmon resonance biosensor (SPRB) which includes a periodic array of subwavelength grating on top of a layer of graphene sheet in the biosensor. The proposed biosensor is named grating-graphene SPRB (GG-SPRB). The aim of the proposed multilayer structure is to improve the sensitivity of the SPRB through monitoring of the biomolecular interactions of DNA hybridization. Significant sensitivity improvement is obtained for the GG-SPRB compared with the conventional SPRB. The result of the numerical investigation of the GG-SPRB is presented and compared with a theoretically developed multilayer matrix formalism, and a good agreement has been observed. In addition, an optimization of the grating dimensions including volume factor, grating depth, grating angle, grating period, and grating geometry (e.g., rectangular, sinusoidal and triangular) is presented. The outcome of the investigation presented in this paper identifies desired functioning conditions corresponding to the best design parameters for the GG-SPRB.
Language eng
Field of Research 090606 Photonics and Electro-Optical Engineering (excl Communications)
Socio Economic Objective 861502 Medical Instruments
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30057606

Document type: Journal Article
Collection: School of Engineering
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