Journal
ENGINEERING JOURNAL-THAILAND
Volume 25, Issue 12, Pages 1-8Publisher
CHULALONGKORN UNIV, FAC ENGINEERING
DOI: 10.4186/ej.2021.25.12.1
Keywords
Fiber optic biosensor; E. coli bacteria; ZnO nanorods; Gold(Au) nano layer
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Funding
- Airlangga University
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This study introduces a fiber optic biosensor based on ZnO nanorods for rapid and sensitive detection of E. coli, showing potential for monitoring water and food quality for various pathogenic microorganisms.
In this study, Zinc oxide (ZnO) nanorods based fiber optic biosensor has been reported for rapid and sensitive detection of Escherichia Coli (E-coli). A thin layer of Gold nanoparticles (Au) (around 50 nm) is coated on the tip of a multimode plastic optical fiber. ZnO Nanorods are grown on Au layer thorough hydrothermal technique. This sensor showed a very fast response within the first 10 second of contacting the present of polluted water with E-coli Different concentrations of E. coli from (1000 to 4000 CFU/ml) have been tested and a sharp trend of sensitivity was observed. This sensing platform shows promising potential for regular water and food quality monitoring of various pathogenic microorganisms.
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