Multifrequency broadband tapered plasmonic nanoantennas

TL;DR

This paper introduces a novel multifrequency broadband plasmonic nanoantenna with tapered directors, enabling enhanced broadband emission, spectroscopy, sensing, and potential use in wireless communication systems.

Contribution

The paper presents a new design of a multifrequency broadband plasmonic nanoantenna with tapered directors for improved emission and sensing capabilities.

Findings

Enables broadband emission enhancement

Supports spectroscopy and sensing applications

Can be used as transmitter and receiver in wireless systems

Abstract

We suggest a novel multifrequency broadband plasmonic Yagi-Uda-type nanoantenna equipped with an array of tapered directors. Each director can be used for the excitation of the antenna by nanoemitters matched spectrally with the director resonant frequency and placed in the director near-field region. Multifrequency op- eration of nanoantennas provides tremendous opportunities for broadband emission enhancement, spectroscopy and sensing. By the principle of reciprocity, the same tapered nanoantenna architecture can be used both as a transmitter and/or as a receiver, thus being useful for creating a broadband wireless communication system.