Numerical analysis of nanoscale resonators using material parameters at THz frequencies

The article presents results of numerical modelling of planar resonators arrays designed for THz frequencies. The increase in the resonant frequency of each array's element is achieved by down-scaling its dimensions. In order to achieve response in the THz/IR region of the electromagnetic response, the partial resonator components of the array collapsed in to the dot-like structures. Two types of dot-like structures were examined — a square and circle shape. Mainly the circle shape resonators seem to be promising for simplified fabrication by micro-structuring technology. Changing the uniformity of array spacing led to rise of new modes in the spectral response. Such effect could be potentially used for spectral data encoding.