Decay Rates of Plasmonic Elliptical Nanostructures via Effective Medium Theory

This paper investigates the spontaneous decay rate of elliptical plasmonic nanostructures. The refractive index was analyzed using the effective medium theory (EMT). Then, the polarizability, spontaneous radiative, non-radiative decay rate, and electric field enhancement factor were characterized for the targeted elliptical nanostructures at different aspect ratios. All of the optical analyses were analyzed at different distances between the excited fluorescent coupled atom and the plasmonic nanostructure (down to 100 nm). This work is promising in selecting the optimum elliptical nanostructure according to the required decay rates for optical conversion efficiency control in energy harvesting for solar cells and optical sensing applications.

Automated summary

This paper investigates the spontaneous decay rate of elliptical plasmonic nanostructures using the effective medium theory (EMT) to analyze the refractive index. It characterizes the polarizability, spontaneous radiative, non-radiative decay rate, and electric field enhancement factor for targeted elliptical nanostructures at different aspect ratios, with optical analyses conducted at varying distances between the excited fluorescent coupled atom and the plasmonic nanostructure. The work shows promise in selecting the best elliptical nanostructure based on required decay rates for energy harvesting in solar cells and optical sensing applications.