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2017-04-24 - Colloque/Article dans les actes avec comité de lecture - Anglais - 4 page(s)

Lopez-Aldaba Aitor, Gonzalez Vila Alvaro , Debliquy Marc , Lopez-Amo M., Caucheteur Christophe , Lahem Driss, "Polyaniline deposition on tilted fiber Bragg grating for pH sensing" in 25th International Conference on Optical Fiber Sensors (OFS 25), 10323, 103235F, Jeju, South Korea, 2017

  • Codes CREF : Capteurs et périphériques (DI2563), Matériaux optiques (DI1256)
  • Unités de recherche UMONS : Electromagnétisme et Télécommunications (F108), Science des Matériaux (F502)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)

Abstract(s) :

(Anglais) In this paper, we present the results of a new pH sensor based on a polyaniline (PAni) coating on the surface of a tilted fiber Bragg grating. The pH-sensitive PAni was deposited by in situ chemical oxidative polymerization. The performance of the fabricated pH sensor was tested and the obtained pH values were compared with the results obtained using a pH meter device. It was found that the sensor exhibits response to pH changes in the range of 2-12, achieving a sensitivity of 46 pm/pH with a maximum error due to the hysteresis effect of ±1.14 pH. The main advantages of this PAni-TFBG pH sensor are biochemical compatibility, temperature independence, long-term stability and remote real- time multipoint sensing features. This type of sensor could be used for biochemical applications, pipeline corrosion monitoring or remote-multipoint measurements.