Total reflection and transmission by epsilon-near-zero metamaterials with defects

TL;DR

This paper explores how epsilon-near-zero metamaterials with defects can be engineered to achieve total reflection or transmission, simplifying waveguide design by controlling geometric and material parameters.

Contribution

It demonstrates that defect properties can be tuned to control wave transmission in epsilon-near-zero metamaterials, reducing reliance on permeability for waveguide applications.

Findings

Total reflection and transmission are achievable through defect tuning.

Adjusting defect geometry and material properties controls wave behavior.

Design simplification for zero-index waveguides by removing permeability dependence.

Abstract

In this work, we investigate wave transmission through an epsilon-near-zero metamaterial waveguide embedded with defects. We show that by adjusting the geometric sizes and material properties of the defects, total reflection and even transmission can be obtained, despite the impedance mismatch of epsilon-near-zero material with free space. Our work can greatly simplify the design of zero-index material waveguide applications by removing the dependence on permeability.