Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped
  Meta-Atoms

Balafendiev, Rustam; Kaur, Gagandeep; Enriquez, Jim A.; Singh, Gaganpreet; Millar, Alexander J.; Gudmundsson, Jon E.; Belov, Pavel

doi:10.48550/arXiv.2506.04428

Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped Meta-Atoms

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posted on 2025-06-08, 16:00 authored by Rustam Balafendiev, Gagandeep Kaur, Jim A. Enriquez, Gaganpreet Singh, Alexander J. Millar, Jon E. Gudmundsson, Pavel Belov

A new design of a microwave-range ENZ metamaterial consisting of rods with an obround cross-section is proposed. The plasma frequency of the metamaterial can be tuned by rotating the constituent meta-atoms. Tunability of the plasma frequency by 26% is demonstrated both experimentally and numerically. The observed tuning range is dramatically higher than in the one observed in natural materials at optical range.

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Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped Meta-Atoms

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