Abstract
In the present work, a highly sensitive SPR biosensor based on silver (Ag), barium titanate (BaTiO3), graphene, and affinity layer is proposed for the detection of Pseudomonas bacteria. The performance of this proposed sensor has been numerically studied and analyzed for sensitivity, quality parameter, and detection accuracy. The proposed structure used attenuated total reflection (ATR) approach based on the Kretschmann configuration for the investigation of performance parameters. The inclusion of the BaTiO3 layer along with the affinity layer shows the enhancement in the performance of the proposed structure for the detection of Pseudomonas bacteria. A comparison of the proposed structure is drawn with contemporary surface plasmon resonance (SPR) biosensors for the detection of Pseudomonas bacteria, and better performance was shown. This work reports that the maximum sensitivity, quality parameter, and detection accuracy for the proposed sensor are 220 degree/RIU, 101.38 RIU−1, and 7.09 respectively. Therefore, the proposed design finds its application in Pseudomonas bacterial detection as well as opens a new window in the biosensing area.
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Acknowledgments
Authors are thankful for collaborative work among the members from ECE Department, MNIT Jaipur (India), the Laser Centre, IBNU SINA ISIR, Universiti Teknologi Malaysia, Johor Bahru campus (Malaysia), and the faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City (Vietnam).
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Mudgal, N., Yupapin, P., Ali, J. et al. BaTiO3-Graphene-Affinity Layer–Based Surface Plasmon Resonance (SPR) Biosensor for Pseudomonas Bacterial Detection. Plasmonics 15, 1221–1229 (2020). https://doi.org/10.1007/s11468-020-01146-2
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DOI: https://doi.org/10.1007/s11468-020-01146-2