Gas sensor based on lossy mode resonances by means of thin graphene oxide films fabricated onto planar coverslips

Vitoria, Ignacio, Gallego, Elieser E., Melendi-Espina, Sonia ORCID:, Hernaez, Miguel ORCID:, Ruiz Zamarreño, Carlos and Matías, Ignacio R. (2023) Gas sensor based on lossy mode resonances by means of thin graphene oxide films fabricated onto planar coverslips. Sensors, 23 (3). ISSN 1424-8220

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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.

Item Type: Article
Additional Information: Funding: This work was supported by Agencia Estatal de Investigación (PID2019-106231RB-I00), Institute of Smart Cities and Public University of Navarra PhD Student grants, and in part by the European Union Horizon 2020 Research and Innovation Programme (Stardust-Holistic and Integrated Urban Model for Smart Cities) under Grant 774094. SM-E would like to express her gratitude for the Fellowship supported by the Royal Academy of Engineering under the Leverhulme Trust Research Fellowships scheme (LTRF2021\17130). Data Availability Statement: Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
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Depositing User: LivePure Connector
Date Deposited: 03 Feb 2023 17:30
Last Modified: 28 Mar 2023 10:30
DOI: 10.3390/s23031459

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