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Surface Functionalization of Exposed Core Glass Optical Fiber for Metal Ion Sensing

1
ARC Centre of Excellence for Nanoscale BioPhotonics, Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide, SA 5005, Australia
2
Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia
3
School of Engineering, University of South Australia, Adelaide, SA 5095, Australia
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(8), 1829; https://doi.org/10.3390/s19081829
Received: 22 March 2019 / Revised: 12 April 2019 / Accepted: 15 April 2019 / Published: 17 April 2019
(This article belongs to the Special Issue Optical Fiber Sensors: Development and Applications)
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Abstract

One of the biggest challenges associated with exposed core glass optical fiber-based sensing is the availability of techniques that can be used to generate reproducible, homogeneous and stable surface coating. We report a one step, solvent free method for surface functionalization of exposed core glass optical fiber that allows achieving binding of fluorophore of choice for metal ion sensing. The plasma polymerization-based method yielded a homogeneous, reproducible and stable coating, enabling high sensitivity aluminium ion sensing. The sensing platform reported in this manuscript is versatile and can be used to bind different sensing molecules opening new avenues for optical fiber-based sensing. View Full-Text
Keywords: surface functionalization; plasma polymerization; sensing; microstructured glass optical fibers; aluminium sensing; exposed core glass optical fibers surface functionalization; plasma polymerization; sensing; microstructured glass optical fibers; aluminium sensing; exposed core glass optical fibers
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Bachhuka, A.; Heng, S.; Vasilev, K.; Kostecki, R.; Abell, A.; Ebendorff-Heidepriem, H. Surface Functionalization of Exposed Core Glass Optical Fiber for Metal Ion Sensing. Sensors 2019, 19, 1829.

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