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Influence of graphene’s chemical potential on SPR biosensor using ZnO for DNA hybridization

  • Sarika Pal
  • Yogendra Kumar PrajapatiEmail author
  • J. P. Saini
Regular Paper
  • 19 Downloads

Abstract

This article presents an SPR biosensor (Structure: SF10 prism-Au-ZnO-Graphene-PBS solution) to sense DNA hybridization using angular interrogation method at an operating wavelength of 633 nm. Its performance parameters, i.e., sensitivity (S), detection accuracy (DA), and figure of merit (FoM) are evaluated for different values of graphene’s chemical potential at room temperature. Sensitivity (141.9 °/RIU), DA (0.64 Degree−1) and FoM (9.14 RIU−1) are achieved for the proposed SPR biosensor at 0 eV chemical potential of graphene at the room temperature. The maximum sensitivity of 156.33°/RIU is obtained for the proposed SPR biosensor at 1.25 eV graphene’s chemical potential. The present article utilizes biocompatibility, chemical stability, and unique electrical and optical properties of both graphene and ZnO in SPR sensor for DNA hybridization.

Keywords

Chemical potential DNA hybridization Surface plasmon resonance (SPR) Zinc oxide (ZnO) 

Notes

Acknowledgements

This work is partially supported under Project No. 34/14/10/2017-BRNS/34285 by Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), Government of India.

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Copyright information

© The Optical Society of Japan 2019

Authors and Affiliations

  1. 1.Department of Electronics EngineeringNational Institute of Technology UttarakhandGarhwalIndia
  2. 2.Department of Electronics and Communication EngineeringMotilal Nehru National Institute of Technology AllahabadAllahabadIndia
  3. 3.Department of Electronics EngineeringNetaji Subhas University of TechnologyNew DelhiIndia

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