dc.contributor.authorRavikumar, Raghunandhan
dc.contributor.authorChen, Li Han
dc.contributor.authorChan, Chi Chiu
dc.contributor.authorSo, Ping Lam
dc.contributor.authorTou, Zhi Qiang
dc.contributor.authorPeng, Zu
dc.contributor.editorKalinowski, Hypolito J.*
dc.contributor.editorFabris, José Luís*
dc.contributor.editorBock, Wojtek J.*
dc.identifier.citationRavikumar, R., Chen, L. H., Chan, C. C., So, P. L., Tou, Z. Q., & Peng, Z. (2015). Chitosan-hydrogel-based fiber optic sensor for heavy metal ion detection. Proceedings of SPIE - 24th International Conference on Optical Fibre Sensors, 9634, 96344O-. doi:10.1117/12.2194804en_US
dc.description.abstractA no-core fiber (NCF) based intermodal sensor for nickel ion (Ni2+) detection is proposed. Bilayers of chitosan and Poly Acrylic acid (PAA) functionalized on the sensor surface serve as adsorption sites for nickel ions thereby causing change in refractive index (RI) along the cladding bilayer boundary. Nickel adsorption at different concentrations was monitored continuously through measurement of wavelength shifts. As observed, the proposed sensor exhibits Ni2+ detection sensitivity of 0.0237 nm/μM.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.format.extent4 p.en_US
dc.rights© 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - 24th International Conference on Optical Fibre Sensors and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2194804]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectNo Core Fiberen_US
dc.subjectDRNTU::Engineering::Chemical engineeringen_US
dc.titleChitosan-hydrogel-based fiber optic sensor for heavy metal ion detectionen_US
dc.typeConference Paper
dc.contributor.conferenceProceedings of SPIE - 24th International Conference on Optical Fibre Sensorsen_US
dc.contributor.researchEnergy Research Institute @NTUen_US
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US

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