Polyaniline coated on tapered multimode fiber for ammonia sensing

Author

Ibrahim, S.A. ; Rahman, N. Abdul ; Abu Bakar, M.H. ; Yaacob, M.H. ; Mahdi, M.A.

Author_Institution

Fac. of Eng., Multimedia Univ., Cyberjaya, Malaysia

fYear

2014

fDate

2-4 Sept. 2014

Firstpage

233

Lastpage

235

Abstract

This paper presents optical response of polyani-line coated on tapered multimode fiber towards ammonia gas. Polyaniline was deposited onto tapered multimode fiber by spray-coating method. Surface morphology of the coating was observed under scanning electron microscope. Absorbance measurement was done using spectrometer while the coated fiber was exposed to ammonia gas with concentration varies from 0.125% to 1% at room temperature. The absorbance is proportional to the ammonia concentration. The response and recovery time is 2.27 minutes and 10 minutes, respectively.

Keywords

ammonia; conducting polymers; fibre optic sensors; gas sensors; infrared spectra; scanning electron microscopy; spray coating techniques; surface morphology; ultraviolet spectra; visible spectra; NH₃; absorbance measurement; ammonia gas; ammonia sensing; coating; optical response; polyaniline; recovery time; scanning electron microscope; spectrometer; spray coating method; surface morphology; tapered multimode fiber; temperature 293 K to 298 K; Coatings; Optical sensors; Optical surface waves; Polymers; Surface morphology; Time factors; absorbance; ammonia sensor; conducting polymer; fiber sensor; tapered fiber;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics (ICP), 2014 IEEE 5th International Conference on

Conference_Location

Kuala Lumpur

Type

conf

DOI

10.1109/ICP.2014.7002365

Filename

7002365