Electrostatic theory for designing lossless negative permittivity metamaterials

TL;DR

This paper introduces an electrostatic theory for designing lossless negative permittivity metamaterials, validated through simulations, highlighting the role of Frohlich mode excitation in achieving negative permittivity with loss compensation.

Contribution

It presents a novel electrostatic design framework for lossless negative permittivity metamaterials, emphasizing the importance of Frohlich mode excitation.

Findings

The theory accurately predicts negative permittivity in composites.

Frohlich mode excitation is key to loss compensation.

Simulations confirm the theory's validity.

Abstract

In this Letter, we develop an electrostatic theory for designing bulk composites with effective lossless negative permittivities. The theory and associated design procedure are validated by comparing their predictions with those of rigorous full-wave simulations. It is demonstrated that the excitation of the Frohlich mode (the first-order surface mode) of the constitutive nanoparticles plays a key role in achieving negative permittivities with compensated losses.