Toroidal dipole response in a multifold double-ring metamaterial

• DOI: 10.1364/oe.20.013065
• Publication Date: 2012-05-25T17:45:54Z
• Authors: Zheng-Gao Dong; Peigen Ni; Jie Zhu; Xiaobo Yin; X. Zhang
• Keywords: Split-ring resonator

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