Design and Modelling of High-Performance Surface Plasmon Resonance Refractive Index Sensor Using BaTiO3, MXene and Nickel Hybrid Nanostructure

In this article, a highly sensitive surface plasmon resonance biomedical sensor based on barium titanate, MXene and nickel hybrid nanostructure has been reported. The present paper is based on a modified Kretschmann configuration. In this configuration, multilayers are vertically stacked together to improve the optical and electronic properties of the proposed surface plasmon resonance sensor. Barium titanate and MXene have unique properties like large surface area, chemical stability, tunable bandgap, small work function, layered structure and good matter-light interaction to improve the performance parameters of the proposed surface plasmon resonance sensor. Nickel also plays a vital role to enhance the performance parameters because it has high metallic conductivity, a large number of absorption sites and hydrophilicity. The optimized performance parameters are angular sensitivity (316 degrees RIU-1), detection accuracy (0.3072 deg(-1)), figure of merit (97.075 RIU-1) and limit of detection (3.164 x 10(-6)) for CaF2 prism/Ag/BaTiO3 /Ni/MXene/Sensing medium at 633 nm wavelength. The strong transverse magnetic field intensity is also plotted for the biomedical sensor to analyze the penetration depth. The designed surface plasmon resonance sensor's optimal penetration depth into the sensing medium is 137 nm. The above results will open a new way to design and develop such type of surface plasmon resonance biomedical sensor.

Automated summary

This article presents a highly sensitive surface plasmon resonance biomedical sensor based on a nanostructure composed of barium titanate, MXene, and nickel. The sensor exhibits optimized performance parameters and penetration depth, making it a promising tool for biomedical applications.