Simulation of local surface plasmon resonance of single gold nano-disk

Surface plasmon resonance (SPR) extinction spectra of single gold nanodisk has been studied by FDTD method. The calculation results reveal that extinction spectra shift can be controlled by tuning radius and height of the particle, which presents a potential application for design and fabrication of optical devices based on SPR. We also obtain the structure parameters of a gold nanodisk whose resonance extinction peak at ∼980 nm, which is of great importance to realize the emission efficiency improvement of 980 nm optoelectronic devices. Moreover, we explore energy relations properties of local plasmon resonance of single Au nano-disk.