Tailorable optical scattering properties of the V-shaped plasmonic nano-antennas: a computationally efficient and fast analysis

TL;DR

This paper presents a fast and efficient computational method for analyzing and tailoring the optical scattering properties of V-shaped plasmonic nano-antennas, enabling rapid design and characterization.

Contribution

Introduction of a macro basis function computational scheme that significantly speeds up analysis of V-shaped nano-antennas compared to existing methods.

Findings

Resonant frequency can be tailored by geometrical design.

The method efficiently analyzes symmetric and anti-symmetric excitations.

Capable of characterizing complex nanoantenna geometries.

Abstract

We introduce an efficient computational scheme based on Macro Basis Function (MBF) method, to analyze the scattering of a plane wave by the V-shaped plasmonic optical nano-antennas. The polarization currents and the scattered fields for symmetric and anti-symmetric excitations are investigated. We investigate how the resonant frequency of the plasmonic V-shaped nanoantenna is tailored by engineering the geometrical parameters and by changing the polarization state of the incident plane wave. The computational model presented herein is faster by orders of magnitude than commercially available finite methods and is capable to characterize also other nanoantennas comprising of junctions and bends of nanorods.