Journal
SENSORS
Volume 17, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/s17102312
Keywords
optical fibre sensor; nanotechnology; nanostructured materials; chemical sensing; bio medical sensing
Funding
- Spanish State Research Agency (AEI)
- European Regional Development Fund (ERDF-FEDER) [TEC2016-79367-C2-2-R, TEC2016-78047-R]
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The measurement of chemical and biomedical parameters can take advantage of the features exclusively offered by optical fibre: passive nature, electromagnetic immunity and chemical stability are some of the most relevant ones. The small dimensions of the fibre generally require that the sensing material be loaded into a supporting matrix whose morphology is adjusted at a nanometric scale. Thanks to the advances in nanotechnology new deposition methods have been developed: they allow reagents from different chemical nature to be embedded into films with a thickness always below a few microns that also show a relevant aspect ratio to ensure a high transduction interface. This review reveals some of the main techniques that are currently been employed to develop this kind of sensors, describing in detail both the resulting supporting matrices as well as the sensing materials used. The main objective is to offer a general view of the state of the art to expose the main challenges and chances that this technology is facing currently.
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