Detection of Escherichia Coli Bacteria Using Few-Layer Black Phosphorous-Based Surface Plasmon Resonance Sensor

In this paper, 2D material-based black phosphorus (BP) and copper (Cu) layer structure of the SPR sensor-based detection of Escherichia coli (E.C.) bacteria with increased performance parameters has been proposed. The simulation results have been determined theoretically using MATLAB and Comsol software with finite element method (FEM). N-FK51A prism is coated with a Cu layer to generate the plasmonics, followed by multiple BP layers (6*BP), which works to increase the field intensity, sensitivity and figure-of-merit (FoM) of the sensor. The higher sensitivity, and FoM of 268.4°/RIU, and 365/RIU are achieved with an increase in the 6*BP layer at 633nm wavelength. As a results, the suggested sensor is increased the sensitivity between the refractive index of 1.33–1.39RIU.