Optical toroidal dipolar response by an asymmetric double-bar metamaterial
SCIE
SCOPUS
- Title
- Optical toroidal dipolar response by an asymmetric double-bar metamaterial
- Authors
- Dong, ZG; Zhu, J; Rho, J; Li, JQ; Lu, CG; Yin, XB; Zhang, X
- Date Issued
- 2012-10-01
- Publisher
- American Institute of Physics
- Abstract
- We demonstrate that the toroidal dipolar response can be realized in the optical regime by designing a feasible nanostructured metamaterial, comprising asymmetric double-bar magnetic resonators assembled into a toroid-like configuration. It is confirmed numerically that an optical toroidal dipolar moment dominates over other moments. This response is characterized by a strong confinement of an E-field component at the toroid center, oriented perpendicular to the H-vortex plane. The resonance-enhanced optical toroidal response can provide an experimental avenue for various interesting optical phenomena associated with the elusive toroidal moment. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757613]
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9733
- DOI
- 10.1063/1.4757613
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 101, no. 14, page. 144105, 2012-10-01
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