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Optical Fiber Refractometer Based Metal Ion Sensors

1
School of EEE, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
2
Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK
*
Author to whom correspondence should be addressed.
Chemosensors 2019, 7(4), 63; https://doi.org/10.3390/chemosensors7040063
Received: 30 September 2019 / Revised: 23 November 2019 / Accepted: 26 November 2019 / Published: 5 December 2019
(This article belongs to the Special Issue Chemical Sensors for Heavy Metals/Toxin Detection)
Research into optical fiber refractometers yielded remarkable results over the past decade. Numerous sensing schemes were proposed and demonstrated, which possessed different advantages while facing unique limitations. On top of their obvious applications in measuring refractive index changes of the ambient environment, several studies reported advanced applications of such sensors in heavy metal ion detection by means of surface coating of the refractometers with heavy metal ion sensitive materials. This paper surveys the effort these optical fiber metal ion sensors based on surface coated optical fiber refractometer, discusses different technologies and methods involved, and highlights recent notable advancements. View Full-Text
Keywords: optical fiber sensors; heavy metal detection; chemical sensing; optical fiber technology optical fiber sensors; heavy metal detection; chemical sensing; optical fiber technology
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MDPI and ACS Style

Tan, R.X.; Ibsen, M.; Tjin, S.C. Optical Fiber Refractometer Based Metal Ion Sensors. Chemosensors 2019, 7, 63.

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