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Design of plasmonic toroidal metamaterials at optical frequencies

Huang, Yao-Wei, Chen, Wei Ting, Wu, Pin Chieh, Fedotov, Vassili, Savinov, Vassili, Ho, You Zhe, Chau, Yuan-Fong, Zheludev, Nikolay I. and Tsai, Din Ping (2012) Design of plasmonic toroidal metamaterials at optical frequencies Optics Express, 20, (2), pp. 1760-1768. (doi:10.1364/OE.20.001760).

Record type: Article


Toroidal multipoles are the subject of growing interest because of their unusual electromagnetic properties different from the electric and magnetic multipoles. In this paper, we present two new related classes of plasmonic metamaterial composed of purposely arranged of four U-shaped split ring resonators (SRRs) that show profound resonant toroidal responses at optical frequencies. The toroidal and magnetic responses were investigated by the finite-element simulations. A phenomenon of reversed toroidal responses at higher and lower resonant frequencies has also been reported between this two related metamaterials which results from the electric and magnetic dipoles interaction. Finally, we propose a physical model based on coupled LC circuits to quantitatively analyze the coupled system of the plasmonic toroidal metamaterials.

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Published date: 11 January 2012
Organisations: Optoelectronics Research Centre


Local EPrints ID: 301210
ISSN: 1094-4087
PURE UUID: f697e82a-d137-47fc-8461-501c37d936bb

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Date deposited: 29 Feb 2012 14:52
Last modified: 29 Sep 2017 16:32

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Author: Yao-Wei Huang
Author: Wei Ting Chen
Author: Pin Chieh Wu
Author: Vassili Fedotov
Author: Vassili Savinov
Author: You Zhe Ho
Author: Yuan-Fong Chau
Author: Din Ping Tsai

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