Glycosuria sensing based on nanometric plasmonic polaritons

Abstract

Abstract Surface Plasmon waves exhibit an interesting characteristic of enclosing light above the diffraction limit. In this work surface plasmon sensor using metal-insulator-metal configuration is demonstrated for an application of Glycosuria detection. The sensing device possesses a slot waveguide and an elliptic cavity in a metallic substrate. On injection of TM polarized mode, surface Plasmon wave coupled with cavity causes the generation of resonating modes the shift in resonant frequency is utilized to detect glucose concentration in urine. The device’s operation is investigated using the Finite Difference Time Domain (FDTD) method. The proposed sensor’s sensitivity is evaluated to be 792.80nm/RIU, with a figure of merit of 113.25.Based on the analysis, it is remarked that the device is suitable for an on-chip application.