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A fast semi-analytical simulation of nanowire arrays based on transmission lines theory

In this work, a semi-analytical technique based on transmission line theory is introduced to reduce the computational resources required to characterize optical properties of vertically aligned nanowire (NW) arrays. To this end, the NW array is divided into several partitions with a similar height. Next, the scattering parameters matrix (S-matrix) of each section is computed using the computational electromagnetics software Ansys® HFSS. Afterwards, the complete array is represented by cascading the equivalent network of each sub-section. The S-matrix of the cascaded networks describes the NW array properties. This technique shows that significant reduction in the computational resources required for simulating NW arrays can be achieved-~50%of the computation RAM and ~70% of the simulation time.