Studying the Toroidal Dipole Moment within Metamaterials

Recently, a toroidal dipole moment was demonstrated by using metamaterials in the classical electrodynamic system, which behaves with a number of unusual electromagnetic properties. In this project, we are particularly interested in optimizing metamaterial design for enhancing the toroidal moment, which could be used in potential applications like low-threshold plasmonic lasing or biosensing. Through numerical simulations, a number of toroidal metamaterial designs, which are made up of planar split ring resonators (SRRs), are studied and the toroidal moment of each design is calculated.