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Proceedings Paper

Fiber optic nickel ion sensor based on direct ligand immobilization
Author(s): R. Raghunandhan; L. H. Chen; C. C. Chan
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Paper Abstract

An inline intermodal no core fiber (NCF) sensor based on direct ligand immobilization for detection of nickel ions (Ni2+) is proposed. Covalently immobilized nickel specific ligand, Meso-Tetra(4-carboxyphenyl)porphine, on the NCF surface serves as adsorption site for Ni2+ and can induce ambient refractive index (RI) change around the NCF on occurrence of binding events. The change in RI results in spectrum wavelength shifts, which was measured for continuous monitoring of Ni2+ concentration. The proposed sensor was observed to exhibit a sensitivity of 121.03 nm/mM towards Ni2+ ions.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103232K (23 April 2017); doi: 10.1117/12.2263431
Show Author Affiliations
R. Raghunandhan, Nanyang Technological Univ. (Singapore)
L. H. Chen, GLOBALFOUNDRIES Singapore (Singapore)
C. C. Chan, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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