Gas Sensor Based on Lossy Mode Resonances by Means of Thin Graphene Oxide Films Fabricated onto Planar Coverslips

Ignacio Vitoria; Elieser E Gallego; Sonia Melendi-Espina; Miguel Hernaez; Carlos Ruiz Zamarreño; Ignacio R Matías

doi:10.3390/s23031459

Gas Sensor Based on Lossy Mode Resonances by Means of Thin Graphene Oxide Films Fabricated onto Planar Coverslips

Sensors (Basel). 2023 Jan 28;23(3):1459. doi: 10.3390/s23031459.

Authors

Ignacio Vitoria^{1

2}, Elieser E Gallego^{1

3}, Sonia Melendi-Espina⁴, Miguel Hernaez⁴, Carlos Ruiz Zamarreño^{1

2}, Ignacio R Matías^{1

2}

Affiliations

¹ Electrical, Electronic and Communications Engineering Department, Public University of Navarre, 31006 Pamplona, Spain.
² Institute of Smart Cities, Jeronimo de Ayanz Building, 31006 Pamplona, Spain.
³ Telecommunications and Electronic Department, University of Pinar del Río, Pinar del Río 20100, Cuba.
⁴ School of Engineering, University of East Anglia (UEA), Norwich Research Park, Norwich NR4 7TJ, UK.

Abstract

The use of planar waveguides has recently shown great success in the field of optical sensors based on the Lossy Mode Resonance (LMR) phenomenon. The properties of Graphene Oxide (GO) have been widely exploited in various sectors of science and technology, with promising results for gas sensing applications. This work combines both, the LMR-based sensing technology on planar waveguides and the use of a GO thin film as a sensitive coating, to monitor ethanol, water, and acetone. Experimental results on the fabrication and performance of the sensor are presented. The obtained results showed a sensitivity of 3.1, 2.0, and 0.6 pm/ppm for ethanol, water, and acetone respectively, with a linearity factor R² > 0.95 in all cases.

Keywords: Lossy Mode Resonance; gas sensor; graphene oxide; optical fiber sensor.

Abstract

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