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. 2024 Mar 21;16(6):861. doi: 10.3390/polym16060861

Figure 1.

Figure 1

Schematic diagram of the sensing system. A CPU controls the LED output power that is coupled into the POF U-Shape. The light is guided by the fiber to the photodetector, and the output returns to the microcontroller. The fiber surface is functionalized with a specific antibody that performs the immunocapture process specifically for E. coli.