Toroidal dipole response in a multifold double-ring metamaterial
arXiv:1212.5648 · doi:10.1364/OE.20.013065
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.
7 pages, 4 figures
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- Recent Progress in the thermodynamics of ferrotoroidic materials
- Macroscopic electromagnetic response of metamaterials with toroidal resonances