Surface Plasmon Resonance In Gold Nanoparticles In Dielectric Media

Abstract

Plasmon resonance in metal nanoparticles depends on numerous factors. It could be characteristics of the particle - material, size and shape. And also, it could be characteristics of the surrounding medium. Localized surface plasmon resonance (LSPR) in spherical gold nanoparticles is studied. Characteristics of LSPR are controlled by changing dielectric permittivity of the surrounding medium in two ways. The first way consists of adding a transparent dielectric material to the nanoparticle sample. The main idea of the second way is to increase particle polarization using the time varying electric field. This method could be used to control characteristics of SRP in different applications.