Investigation of Gold-graphene Surface Plasmon Resonance Biosensor

Toloue, A.T., Centeno, A. and Ahmadi, M.T. (2014) Investigation of Gold-graphene Surface Plasmon Resonance Biosensor. JSAP-OSA Joint Symposia 2014, Sapporo, Japan, 17-20 Sep 2014. ISBN 9784863484436 (doi: 10.1364/JSAP.2014.17p_C3_7)

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Metal thin film functionalization with biomolecular recognition elements (BRE), to improve adsorption of biomolecule, is a way for SPR biosensor sensitivity enhancement. In this paper a graphene-based SPR biosensor with wavelength modulation will be presented. A few graphene layers added to a conventional gold thin film SPR biosensor leads to a drastic increase in sensitivity. This is due to the increased biomolecule adsorption in the graphene layers. In comparison to conventional SPR sensors this produces a large change in the index of refraction change at the metal-dielectric interface. In this paper, the reflection of light coupled into a SPR mode propagating along a thin Au-graphene layer surrounded by dielectric layers is simulated and it is compared with a conventional SPR sensor. The simulation of light reflection in wavelength modulation via MATLAB is illustrated.

Item Type:Conference or Workshop Item
Glasgow Author(s) Enlighten ID:Centeno, Dr Anthony
Authors: Toloue, A.T., Centeno, A., and Ahmadi, M.T.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy

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