Chitosan-hydrogel-based fiber optic sensor for heavy metal ion detection

• Main Authors: Ravikumar, Raghunandhan, Chen, Li Han, Chan, Chi Chiu, So, Ping Lam, Tou, Zhi Qiang, Peng, Zu
• Other Authors: Kalinowski, Hypolito J.
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: DRNTU::Engineering::Chemical engineering; Intermodal; No Core Fiber
• Online Access: https://hdl.handle.net/10356/88345; http://hdl.handle.net/10220/46914
• Institution: Nanyang Technological University

A 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 bounda...