Observation of zero-transmission dip in a single-layer electric metamaterial with finite non-radiative loss

Author:

Tamayama Yasuhiro1ORCID,Hoshino Tomohiro1ORCID

Affiliation:

1. Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology , 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan

Abstract

We propose a theory for realizing a zero-transmission dip in the transmission spectrum of a reflectionless single-layer metamaterial designed based on the Brewster effect by variably controlling the radiative loss of the metamaterial in response to the non-radiative loss. The radiative loss can be controlled while maintaining broadband zero reflection by varying the relationship between the orientation of the constituent meta-atoms and the incident electromagnetic fields. As a verification of the proposed theory, we design a reflectionless metamaterial by arranging meta-atoms that exhibit a simple electric dipole resonance in a two-dimensional lattice. The numerically calculated and experimentally measured transmission spectra of this metamaterial demonstrate that the radiative loss can be controlled by changing the arrangement of the meta-atoms without altering their structure, and that a zero-transmission dip can be observed for a certain arrangement of the meta-atoms. This study could lead to the development of material sensing, especially for lossy materials based on resonant metamaterials.

Funder

Japan Society for the Promotion of Science

Japan Science and Technology Agency

Publisher

AIP Publishing

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