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2 March 2022 Selective detection of metal cations using hydrogel-core microstructured polymer optical fibers by fiber enhanced Raman spectroscopy
Mikel Azkune, Igor Ayesta, Leire Ruiz-Rubio, Eneko Arrospide, José Luis Vilas-Vilela, Joseba Zubia
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Proceedings Volume 11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII; 119530C (2022) https://doi.org/10.1117/12.2606789
Event: SPIE BiOS, 2022, San Francisco, California, United States
Abstract
A new approach of fiber enhanced Raman spectroscopy for different metal cations detection and quantification is presented. The creation of a functional sodium-alginate hydrogel within the core of a self-fabricated microstructured polymer optical fiber, allows light guidance of the incident and scattered light due to the modified total internal reflection. This fact enhances the Raman spectra of the molecules placed in the core. Moreover, the functional hydrogel created in the core is capable of differentiating among high and low affinity target molecules. Experimental results demonstrate the feasibility of this sensing platform due to the aforementioned selectivity and Raman enhancement.
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Mikel Azkune, Igor Ayesta, Leire Ruiz-Rubio, Eneko Arrospide, José Luis Vilas-Vilela, and Joseba Zubia "Selective detection of metal cations using hydrogel-core microstructured polymer optical fibers by fiber enhanced Raman spectroscopy", Proc. SPIE 11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII, 119530C (2 March 2022); https://doi.org/10.1117/12.2606789
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KEYWORDS
Raman spectroscopy
Polymer optical fibers
Principal component analysis
Polymethylmethacrylate
Structured optical fibers
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