Graphene Oxide in Lossy Mode Resonance-Based Optical Fiber Sensors for Ethanol Detection

被引：31
|
作者：
Hernaez, Miguel [1 ]
Mayes, Andrew G. [1 ]
Melendi-Espina, Sonia [2 ]
机构：
[1] Univ East Anglia, Sch Chem, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England
[2] Univ East Anglia, Engn Div, Sch Math, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England
来源：
SENSORS | 2018年 / 18卷 / 01期
关键词：
optical fiber sensor; ethanol sensor; lossy mode resonances; graphene oxide; layer-by-layer; WATER;
D O I：
10.3390/s18010058
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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.
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页数：10
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