Variable incidence angle localized surface plasmon resonance graphene biosensor

Islam, Md. Saiful and Kouzani, Abbas Z. 2011, Variable incidence angle localized surface plasmon resonance graphene biosensor, in CME 2011 : Proceedings of the 2011 IEEE/ICME International Conference on Complex Medical Engineering, IEEE, [Harbin Heilongjiang, China], pp. 58-63.

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Title Variable incidence angle localized surface plasmon resonance graphene biosensor
Author(s) Islam, Md. Saiful
Kouzani, Abbas Z.
Conference name Complex Medical Engineering. Conference (5th : 2011 : Harbin Heilongjian, China)
Conference location Harbin Heilongjiang, China
Conference dates 22-25 May 2011
Title of proceedings CME 2011 : Proceedings of the 2011 IEEE/ICME International Conference on Complex Medical Engineering
Editor(s) [Unknown]
Publication date 2011
Conference series Complex Medical Engineering. Conference
Start page 58
End page 63
Publisher IEEE
Place of publication [Harbin Heilongjiang, China]
Keyword(s) biosensor
evanescent wave
Kretschmann configuration
localized surface plasmon resonance
sensitivity
Summary This paper investigates the enhancement of sensitivity of variable incidence angle LSPR biosensor by monitoring biomolecular interactions of biotin-streptavidin with gold thin film. The investigation is carried out by means of introducing an additional layer of graphene sheet on top of gold layer (graphene biosensor) and using different coupling configuration of laser beam. The sensitivity, which is indicated by the shift of plasmon resonance angle, increases with graphene deposited onto the gold layers and is linearly related with the number of graphene layers. In addition, an investigation of the shift of plasmon dip is carried out for two different analyte interfaces: air and water. It is found that graphene biosensor has better sensitivity for triangular prism, higher prism angle, and water interface. The evaluation approach involves a plot of a reflectivity curve as a function of the angle of incidence while the operating wavelength is kept fixed.
ISBN 9781424493241
9781424493234
Language eng
Field of Research 090606 Photonics and Electro-Optical Engineering (excl Communications)
Socio Economic Objective 861502 Medical Instruments
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2011, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042384

Document type: Conference Paper
Collection: School of Engineering
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