Graphene oxide in lossy mode resonance-based optical fiber sensors for ethanol detection

Hernaez, Miguel ORCID:, Mayes, Andrew G. and Melendi-Espina, Sonia ORCID: (2018) Graphene oxide in lossy mode resonance-based optical fiber sensors for ethanol detection. Sensors, 18 (1). ISSN 1424-8220

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The influence of graphene oxide (GO) over the features of an optical fiber ethanol sensor based on lossy mode resonances (LMR) has been studied in this work. Four different sensors were built with this aim, each comprising a multimode optical fiber core fragment coated with a SnO2 thin film. Layer by layer (LbL) coatings made of 1, 2 and 4 bilayers of polyethyleneimine (PEI) and graphene oxide were deposited onto three of these devices and their behavior as aqueous ethanol sensors was characterized and compared with the sensor without GO. The sensors with GO showed much better performance with a maximum sensitivity enhancement of 176% with respect to the sensor without GO. To our knowledge, this is the first time that GO has been used to make an optical fiber sensor based on LMR.

Item Type: Article
Additional Information: This article belongs to the Special Issue Optical Fiber Sensors 2017
Uncontrolled Keywords: optical fiber sensor,ethanol sensor,lossy mode resonances,graphene oxide,layer-by-layer
Faculty \ School: Faculty of Science > School of Mathematics
Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Chemistry of Materials and Catalysis
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Depositing User: Pure Connector
Date Deposited: 03 Jan 2018 07:44
Last Modified: 22 Oct 2022 03:27
DOI: 10.3390/s18010058


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