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arXiv · 1212.5648

Toroidal dipole response in a multifold double-ring metamaterial

Zheng-Gao Dong·Peigen Ni·Jie Zhu·Xiaobo Yin·X. Zhang
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Abstract

The toroidal response is numerically investigated in a multifold double-ring metamaterials at the antibonding magnetic-dipole mode (i.e., antiparallel magnetic dipoles in one double-ring fold). This intriguing toroidal resonance in metamaterials is considered as a result of the magnetoelectric effect due to the broken balance of the electric near-field environment. We demonstrate that the toroidal dipole response in metamaterials can improve the quality factor of the resonance spectrum. In viewing of the design flexibility on the double-ring geometry, such toroidal metamaterials will offer advantages in application potentials of toroidal dipolar moment.

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Zheng-Gao Dong, Peigen Ni, Jie Zhu, Xiaobo Yin, X. Zhang. 2012-12-22. Toroidal dipole response in a multifold double-ring metamaterial. https://doi.org/10.1364/oe.20.013065

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