Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/15782
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dc.contributor.authorSingh M.
dc.contributor.authorRaghuwanshi S.K.
dc.date.accessioned2021-05-05T10:28:00Z-
dc.date.available2021-05-05T10:28:00Z-
dc.date.issued2020
dc.identifier.citationReview of Scientific Instruments Vol. 91 , 12 , p. -en_US
dc.identifier.urihttps://doi.org/10.1063/5.0020571
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/15782-
dc.description.abstractIn this work, a TiO2 coated etched long-period grating (e-LPG) fiber optic biosensor is developed for the detection of Escherichia coli (E. coli) bacteria in food items. Label-free Escherichia coli bacteria monitoring is done over the detection range of 0 cfu/ml-50 cfu/ml using an advanced spectral interrogation mechanism. The thin film deposition of 40 nm TiO2 over the e-LPG is confirmed by the microscopy method, such as scanning electron microscopy. In our proposed biosensor design, T4-bacteriophage is covalently immobilized over the TiO2 coated fiber surface. This biosensor system has reached sensitivity at 2.55 nm/RIU. Our experiments confirm the resolution and the limit of detection (3σ/S) of 0.0039 RIU and 10.05 ppm, respectively. The proposed biosensor with enhanced sensitivity is suitable for monitoring harmful pathogens/infectious agents in various food products. © 2020 Author(s).en_US
dc.titleReal-time interrogation of fiber optic biosensor using TiO2coated etched long-period gratingen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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