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Reference type: Journal
Authors: Usha SP, Shrivastav AM, Gupta BD
Article Title: A contemporary approach for design and characterization of fiber-optic-cortisol sensor tailoring LMR and ZnO/PPY molecularly imprinted film.
Publication date: 2017
Journal: Biosensors and Bioelectronics
Volume: 87
Page numbers: 178-186.
DOI: 10.1016/j.bios.2016.08.040
Alternative URL: https://www.researchgate.net/publication/306126035_A_contemporary_approach_for_design_and_characterization_of_fiber-optic-cortisol_sensor_tailoring_LMR_and_ZnOPPY_molecularly_imprinted_film

Abstract: A fiber optic salivary cortisol sensor using a contemporary approach of lossy mode resonance and molecular imprinting of nanocomposites of zinc oxide (ZnO) and polypyrrole (PPY) is structured and depicted for the concentration range of 0 - 10-6 g/ml of cortisol prepared in artificial saliva. Components of polymer preparation and the nanocomposite of polymer with ZnO are optimized for realizing the molecular imprinted layer of the sensor. Nanocomposite having 20% of ZnO in PPY is found to give highest sensitivity of the sensor. The sensor reports the best limit of detection ever reported with better stability, repeatability and response time. Lossy mode resonance based salivary cortisol sensor using nanocomposite molecular imprinted layer reported first time boosts the specificity of the sensor. The implementation of sensor over optical fiber adds up other advantages such as real time and online monitoring along with remote sensing abilities which makes the sensor usable for nonintrusive clinical applications
Template and target information: cortisol
Author keywords: Lossy mode resonance, Optical fiber, sensor, Zinc oxide - polypyrrole nanocomposite, Salivary cortisol


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