23 April 2017 Optical monitoring of thin film electro-polymerization on surface of ITO-coated lossy-mode resonance sensor
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103234W (2017) https://doi.org/10.1117/12.2265932
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
This work presents an optical fiber sensors based on lossy–mode resonance (LMR) phenomenon supported by indium tin oxide (ITO) thin overlay for investigation of electro-polymerization effect on ITO’s surface. The ITO overlays were deposited on core of polymer-clad silica (PCS) fibers using reactive magnetron sputtering (RMS) method. Since ITO is electrically conductive and electrochemically active it can be used as a working electrode in 3-electrode cyclic voltammetry setup. For fixed potential applied to the electrode current flow decrease with time what corresponds to polymer layer formation on the ITO surface. Since LMR phenomenon depends on optical properties in proximity of the ITO surface, polymer layer formation can be monitored optically in real time. The electrodeposition process has been performed with Isatin which is a strong endogenous neurochemical regulator in humans as it is a metabolic derivative of adrenaline. It was found that optical detection of Isatin is possible in the proposed configuration.
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Michał Sobaszek, Magdalena Dominik, Dariusz Burnat, Robert Bogdanowicz, Viteszlav Stranak, Petr Sezemsky, Mateusz Śmietana, "Optical monitoring of thin film electro-polymerization on surface of ITO-coated lossy-mode resonance sensor ", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234W (23 April 2017); doi: 10.1117/12.2265932; https://doi.org/10.1117/12.2265932
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