Design and excitation of a plasmonic metasurface V-nanogroove based localized surface plasmon for nanoplasmonics sensing

Abstract

The extreme sensitivity of plasmonic-based sensors is well known in optics and photonics community. We design a metasurface V-nanogroove that is capable to excite a localized surface plasmon (LSP) for nanosplamonics sensing.  Localised surface plasmon is the collective oscillation when light is coupled within conductive nanoparticles smaller than the incidence wavelength due to the interactions between the incident light and the surface electrons in a conduction band. The LSPs are excited when a coherent monochromatic light is sent through the nanogroove, and the excitation is monitored. Different metasurface plasmonic V-nanogrooves of various sizes (thickness) ranges from 50 to 150 nm were designed. The excited LSPs are used for sensing applications such as biosensing and detecting chemical contaminants in the environment