부산대학교 도서관

Metal-Insulator-Metal (MIM) nanocavities exhibit cavity resonances corresponding to Epsilon-Near-Zero (ENZ) modes which can be tuned throughout the visible region by varying the dielectric thickness. Lateral micro/nano-structuring of these cavities as pillars gives rise to electric and magnetic dipole resonance modes with properties depending on multiple parameters like pillar diameter, periodicity of the array etc. This lateral confinement affects the cavity resonance, which blue shifts when the diameter of the pillars is decreased. In this work, we elaborate the dependence of cavity and dipole modes on the diameter of the pillars, using FDTD simulations and experiments.