Highly sensitive refractive index sensor by floating nano-particles in the solution for the detection of glucose/fructose concentration

In this research, an optimum design is proposed for better utilization of field resonance. More interaction the formed around nano-particles with a solution, which has refractive index variations, can substantially increase sensitivity plasmonic biosensors. could be provided by floating in solution. The structure, peak resonance, light sensing features comparison to similar non-floating structures. While without nano-particle, 265.8 nm/RIU realization full nano-particles, structure elliptic disc and circular are 574.2 425 nm/RIU, respectively. Full width at half maximum (FWHM) 57.4 nm 49.4 nm, presence meshed SiO2 network pseudo-floating form, FWHM 504 58.4 discs 372 49.9 discs,