High sensitivity optical fiber pH sensor using poly(acrylic acid) nanofibers

Author

Corres, Jesus ; Arregui, Francisco ; Matias, Ignacio ; Rodriguez, Y.

Author_Institution

Dept. of Electr. & Electron. Eng., Public Univ. of Navarra, Pamplona, Spain

fYear

2013

fDate

3-6 Nov. 2013

Firstpage

1

Lastpage

4

Abstract

In this work a new optical fiber pH sensor based on the deposition of poly(acrylic acid) (PAA) using the electrospinning technique is presented. The optical fiber structure consists of a 4 cm segment of hollow core fiber (50/150μm) spliced between two standard multimode fibers onto which the nanoweb is deposited. The sensitive layer is a membrane composed by PAA nanofibers deposited onto the surface of an optical fiber. The sensor has a repetitive behavior and low hysteresis in the pH range 4-7, with an average sensitivity of 0,53 dB/pH.

Keywords

chemical sensors; electrospinning; fibre optic sensors; membranes; nanofibres; nanosensors; optical fibre fabrication; organic compounds; pH measurement; splicing; PAA deposition; electrospinning technique; high sensitivity optical fiber pH sensor; hollow core fiber; membrane; nanoweb; poly(acrylic acid) nanofiber; size 4 cm; splicing; standard multimode fiber; surface deposition; Optical fiber sensors; Optical fibers; Polymers; Sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

SENSORS, 2013 IEEE

Conference_Location

Baltimore, MD

ISSN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2013.6688291

Filename

6688291