Strong gyrotopy in a chiral toroidal medium
N. Papasimakis, V. A. Fedotov, K. Marinov, A. D. Boardman, N. I., Zheludev
TL;DR
This paper reports the first experimental investigation of a chiral toroidal metamaterial demonstrating three circular dichroism bands in the GHz range, analyzed through multipole moments including toroidal dipoles.
Contribution
It introduces a novel chiral metamaterial with toroidal wire windings and characterizes its electromagnetic response experimentally.
Findings
Exhibits three circular dichroism bands in GHz range
Shows significant response related to toroidal dipole moments
Provides experimental validation of theoretical models
Abstract
In this letter, we present the first experimental study of a new chiral metamaterial consisting of toroidal wire windings. We show that the metamaterial exhibits three bands of circular dichroism in the GHz range. We discuss the response of the structure in terms of multipole moments, including the (magnetic) toroidal dipole moment.
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