Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 304, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.126955
Keywords
Optical fibre sensor; Resonance; Thin-film; Refractometer; Biosensor
Funding
- Spanish Ministry of Education and Science [FEDERTEC2016-78047]
- Government of Navarre [PC021-022 OPTISENS, BIOPTSENS AVANZA, 0011-1365-2017-000117]
- Public University of Navarra [PJUPNA26]
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In this work it is proved the ability to obtain lossy mode resonances (LMRs) in the transmission spectrum with multimode-coreless-multimode fibre optic structure coated with tin oxide on the coreless segment. The devices were characterized as a function of the surrounding medium refractive index and sensitivities of 7346.93 nm/RIU and 708.57 nm/RIU were attained for the first and the second LMR respectively. As an application proof of this technology, one of the devices was biofunctionalized and used for detecting goat anti-mouse IgG in concentrations ranging from 1 to 40 mg/L, with a limit of detection of 0.6 mg/L. This proves the ability of this simple structure to be used for biological, chemical or environmental applications.
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