Journal
OPTICS EXPRESS
Volume 20, Issue 12, Pages 13065-13070Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.013065
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Funding
- US National Science Foundation (NSF) Nanoscale Science and Engineering Center [CMMI-0751621]
- National Natural Science Foundation of China [10904012, 11174051]
- SEU
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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. (C) 2012 Optical Society of America
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