Abstract
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.
| Original language | English |
|---|---|
| Article number | 58 |
| Journal | Sensors |
| Volume | 18 |
| Issue number | 1 |
| Early online date | 27 Dec 2017 |
| DOIs | |
| Publication status | Published - Jan 2018 |
Keywords
- optical fiber sensor
- ethanol sensor
- lossy mode resonances
- graphene oxide
- layer-by-layer
Profiles
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Miguel Hernaez
- School of Engineering, Mathematics and Physics - Lecturer in Telecommunication & Electronic Engineering
- Centre for Photonics and Quantum Science - Member
- Materials, Manufacturing & Process Modelling - Member
Person: Research Group Member, Academic, Teaching & Research
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Andrew Mayes
- School of Chemistry, Pharmacy and Pharmacology - Emeritus Professor
- Chemistry of Materials and Catalysis - Member
Person: Honorary, Research Group Member
-
Sonia Melendi-Espina
- School of Engineering, Mathematics and Physics - Associate Professor in Energy and Environmental Engineering
- Materials, Manufacturing & Process Modelling - Member
- Sustainable Energy - Member
Person: Research Group Member, Academic, Teaching & Research