Design of plasmonic toroidal metamaterials at optical frequencies

Design of plasmonic toroidal metamaterials at optical frequencies. Huang, Y., Chen, W. T., Wu, P. C., Fedotov, V., Savinov, V., Ho, Y. Z., Chau, Y., Zheludev, N. I., & Tsai, D. P. Optics Express, 20(2):1760--1768, January, 2012.

Paper doi abstract bibtex

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.

@article{huang_design_2012,
	title = {Design of plasmonic toroidal metamaterials at optical frequencies},
	volume = {20},
	url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-20-2-1760},
	doi = {10.1364/OE.20.001760},
	abstract = {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.},
	number = {2},
	urldate = {2014-12-19},
	journal = {Optics Express},
	author = {Huang, Yao-Wei and Chen, Wei Ting and Wu, Pin Chieh and Fedotov, Vassili and Savinov, Vassili and Ho, You Zhe and Chau, Yuan-Fong and Zheludev, Nikolay I. and Tsai, Din Ping},
	month = jan,
	year = {2012},
	keywords = {Metamaterials, Optical resonators, Plasmonics, Surface plasmons},
	pages = {1760--1768}
}

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