Optical and Quantum Electronics

, Volume 47, Issue 7, pp 1911–1918 | Cite as

Comparative analysis for reflectivity of graphene based SPR biosensor

  • Goutam Mohanty
  • Bijay Kumar Sahoo
  • Jamil Akhtar


In this theoretical work, we have investigated the nature of reflectance from a graphene based SPR biosensor. Metals like gold, silver and copper are examined according to their minimum reflectance. The thickness of metal and graphene layers has been optimized to explore how plasmon dip varies with respect to number of graphene layers. It is found that plasmon dip does not vary linearly with respect to the number of graphene layers. However, by method of best fit, it is observed that plasmon dip varies as a three parameter exponential manner with the number of graphene layers. In addition, it is also shown that the shift of plasmon dip can be controlled by decreasing the thickness of metal (silver particularly) with increasing graphene layer.


Surface plasmon resonance Graphene Biosensor Plasmon dip 



One of the authors G. Mohanty would like to thank N.I.T Raipur, India for providing institute fellowship for this work.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Goutam Mohanty
    • 1
  • Bijay Kumar Sahoo
    • 1
  • Jamil Akhtar
    • 2
  1. 1.Department of PhysicsN.I.TRaipurIndia
  2. 2.Sensor and Nanotechnology GroupCSIR-CEERIPilaniIndia

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