Sensing of nanoporous 2D materials like rGO using THz hole arrays

Vaishnavi Sajeev; Shreeya Rane; Debal Ghosh; Nityananda Acharyya; Palash Roy Choudhury; Arnab Mukherjee; Dibakar Roy Chowdhury

doi:10.1117/12.3016655

10 June 2024 Sensing of nanoporous 2D materials like rGO using THz hole arrays

Vaishnavi Sajeev, Shreeya Rane, Debal Ghosh, Nityananda Acharyya, Palash Roy Choudhury, Arnab Mukherjee, Dibakar Roy Chowdhury

Author Affiliations +

Proceedings Volume 12990, Metamaterials XIV; 129900J (2024) https://doi.org/10.1117/12.3016655
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

Reduced Graphene Oxide (rGO) and other graphene-based two-dimensional (2D) materials exhibit promising potential across various fields, such as energy storage, solar cells, and sensors. However, concerns regarding the toxic nature of rGO in biomedical applications have been raised. In this study, we investigate the feasibility of utilizing hole arrays as a sensing platform for detecting the presence of rGO through the modulation of Surface Plasmon Resonance (SPR) via Extraordinary Transmission phenomena (EOT) in the Terahertz (THz) regime. The rGO is prepared using the Hummers method and subsequent reduction of Graphene Oxide (GO). Characterization of the reduced material is performed using Fourier-Transform Infrared spectroscopy (FTIR) and X-Ray Diffraction (XRD), confirming successful reduction. Deposition of rGO on top of hole arrays resulted in changes in SPR frequency, indicating a responsive sensing platform sensitive to changes in rGO thickness. Experimental findings are further verified through numerical simulations. Our study highlights the potential of surface plasmon-based sensing platforms for the detection of rGO using hole arrays in the THz regime.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Vaishnavi Sajeev, Shreeya Rane, Debal Ghosh, Nityananda Acharyya, Palash Roy Choudhury, Arnab Mukherjee, and Dibakar Roy Chowdhury "Sensing of nanoporous 2D materials like rGO using THz hole arrays", Proc. SPIE 12990, Metamaterials XIV, 129900J (10 June 2024); https://doi.org/10.1117/12.3016655

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