Studying the effect of 2D nanomaterials on aluminum-based plasmonic device with TiO2-SiO2 composite layers for biosensing applications

Pankaj Arora; Ananya Singh; Sindura Patria; Sambhavi Shukla; Nitika Grover

doi:10.1117/12.3000612

12 March 2024 Studying the effect of 2D nanomaterials on aluminum-based plasmonic device with TiO₂-SiO₂ composite layers for biosensing applications

Pankaj Arora, Ananya Singh, Sindura Patria, Sambhavi Shukla, Nitika Grover

Author Affiliations +

Proceedings Volume PC12880, Physics and Simulation of Optoelectronic Devices XXXII; PC128800K (2024) https://doi.org/10.1117/12.3000612
Event: SPIE OPTO, 2024, San Francisco, California, United States

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Abstract

We engineer an Aluminum (Al)-based plasmonic device coated with TiO₂ and SiO₂ layers for biosensing applications. First, the thicknesses of TiO₂, SiO₂, and Al layers are optimized under the angle interrogation scheme for a wavelength of 1550 nm. Over an optimized value of TiO₂, SiO₂, and Al film thickness, the variation trend in the performance parameters is studied for a range of thicknesses of 2D nanomaterials for the biofunctionalization of the sensing surface. Later, with the optimized intermediate layers, we present a comparative analysis of Al-based Kretschmann configuration with Graphene, MoS₂, MXene, and Fluorinated Graphene. It is observed that the TiO₂-SiO₂-Al-Fluorinated Graphene-based plasmonic device provides enhanced sensing parameters (sensitivity =120°/RIU, Figure of Merit = 430 RIU^-1).

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Pankaj Arora, Ananya Singh, Sindura Patria, Sambhavi Shukla, and Nitika Grover "Studying the effect of 2D nanomaterials on aluminum-based plasmonic device with TiO₂-SiO₂ composite layers for biosensing applications", Proc. SPIE PC12880, Physics and Simulation of Optoelectronic Devices XXXII, PC128800K (12 March 2024); https://doi.org/10.1117/12.3000612

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