Work

Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames

Year: 2024

Type: article

Abstract: A narrow frequency bandwidth of epsilon-near-zero metamaterials limits the use of many optical, microwave, and electronic devices. In this paper, we propose a recipe to broaden the operational bandwidth by employing a structure of properly tailored square frames nested within each other. To illustrate this effect, we derive the effective permittivity for the considered frame geometry. Then, we show that combining constituent materials with loss and materials with gain enables us to achieve the effective permittivity over a frequency band as small as desired. This technique may prove valuable for various applications including invisibility cloaks, camouflage, shielding, and sensorics.

Source: Photonics

DOI: 10.3390/photonics11121185

Authors: Anatoliy V. Goncharenko, Vyacheslav M. Silkin

Institutions: V.E. Lashkaryov Institute of Semiconductor Physics, Donostia International Physics Center, Ikerbasque, University of the Basque Country

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,728

Funder: Ministerio de Ciencia e Innovación