期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 254, 期 -, 页码 1087-1093出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.07.167
关键词
Optical fiber sensor; Fiber Bragg grating; Tilted fiber Bragg grating; Polyaniline; pH sensor; Chemical sensor
资金
- F.R.S.-FNRS through a FRIA grant
- ERC (European Research Council) Starting Independent Grant PROSPER [280161]
- Spanish Comision Interministerial de Ciencia y Tecnologia [TEC2016-76021-C2-1-R, TEC2013-47264-C2-2-R]
- SUDOE ECOAL-MGT from the European Union
- FEDER funds from the European Union
- CAPTINDOOR WBGREEN programs (Walloon Region of Belgium)
In this paper, we report an optical fiber pH sensor based on a polyaniline coating deposited on the surface of a tilted fiber Bragg grating. The pH-sensitive film was synthesized by in situ chemical oxidative polymerization keeping track of the deposition time in order to optimize the sensor response. As a result, the sensor reacts to pH changes in the range of 2-12 with a fast response and its sensitivity is directly related to the film thickness. The main advantages of this PAni-TFBG pH sensor are its biochemical compatibility, temperature independence, long-term stability and remote real-time multipoint sensing features. (C) 2017 Elsevier B.V. All rights reserved.
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