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2018-01-16 - Article/Dans un journal avec peer-review - Anglais - 7 page(s)

Lopez-Aldaba Aitor, Gonzalez Vila Alvaro , Debliquy Marc , Lopez-Amo M., Caucheteur Christophe , Lahem Driss, "Polyaniline-coated tilted fiber Bragg gratings for pH sensing" in Sensors and Actuators. B, Chemical, 254, 1087–1093, 10.1016/j.snb.2017.07.167

  • Edition : Elsevier Science
  • 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) tIn this paper, we report an optical fiber pH sensor based on a polyaniline coating deposited on the surfaceof a tilted fiber Bragg grating. The pH-sensitive film was synthesized by in situ chemical oxidative poly-merization keeping track of the deposition time in order to optimize the sensor response. As a result, thesensor reacts to pH changes in the range of 2–12 with a fast response and its sensitivity is directly relatedto 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.