Multiplexed sensing platform based on magneto-optical SPR for VOC detection

Sorin David; Cristina Polonschii; Szilveszter Gaspar; Mihaela Gheorghiu; Eugen Gheorghiu

doi:10.1117/12.3001614

12 March 2024 Multiplexed sensing platform based on magneto-optical SPR for VOC detection

Sorin David, Cristina Polonschii, Szilveszter Gaspar, Mihaela Gheorghiu, Eugen Gheorghiu

Proceedings Volume 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII; 128890K (2024) https://doi.org/10.1117/12.3001614
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

This work describes the development of a fast, sensitive and reliable device for the detection of outdoor and indoor Volatile Organic Compounds (VOCs) based on the Magneto-Optical Surface Plasmon Resonance (MO-SPR). The novelty of the proposed approach is based on the enhancement of the surface plasmon resonance by applying a magnetic field to modulate the optical signal using the transverse magneto-optical Kerr effect leading to improved sensitivity. The device is based on a modular benchtop MOSPR equipment integrated into an SPR platform with imaging capabilities. The detection area consists of a magneto-optical material based on a Co-Au alloy with increased stability and sensitivity previously developed by our group. The sensitivity of the detection area is further augmented by adding a sensing matrix that includes functional nanoparticles with magneto-plasmonic properties. An array of spots of gas-sensitive polymers and metallic oxides embedded in a sensing matrix provides a specific “fingerprint” after interacting with individual VOCs. The measured response is analyzed using a multivariate data analysis approach to extract relevant information regarding the type and quantity of the compound. The device is tested on ethanol, toluene and xylene as model VOCs.

Conference Presentation

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

Citation Download Citation

Sorin David, Cristina Polonschii, Szilveszter Gaspar, Mihaela Gheorghiu, and Eugen Gheorghiu "Multiplexed sensing platform based on magneto-optical SPR for VOC detection", Proc. SPIE 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII, 128890K (12 March 2024); https://doi.org/10.1117/12.3001614

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