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Resonant Transparency and Non-Trivial Non-Radiating Excitations in Toroidal Metamaterials

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Fedotov, V. A., Rogacheva, A. V., Savinov, V., Tsai, D. P., Zheludev, N. I.·2013·Scientific Reports

Abstract

Engaging strongly resonant interactions allows dramatic enhancement of functionalities of many electromagnetic devices. However, resonances can be dampened by Joule and radiation losses. While in many cases Joule losses may be minimized by the choice of constituting materials, controlling radiation losses is often a bigger problem. Recent solutions include the use of coupled radiant and sub-radiant modes yielding narrow asymmetric Fano resonances in a wide range of systems, from defect states in photonic crystals and optical waveguides with mesoscopic ring resonators to nanoscale plasmonic and metamaterial systems exhibiting interference effects akin to electromagnetically-induced transparency. Here we demonstrate theoretically and confirm experimentally a new mechanism of resonant electromagnetic transparency, which yields very narrow isolated symmetric Lorentzian transmission lines in toroidal metamaterials. It exploits the long sought non-trivial non-radiating charge-current excitation based on interfering electric and toroidal dipoles that was first proposed by Afanasiev and Stepanovsky in [J. Phys. A Math. Gen. 28, 4565 (1995)].

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Metadata

Authors
Fedotov, V. A., Rogacheva, A. V., Savinov, V., Tsai, D. P., & Zheludev, N. I.
Venue
Scientific Reports
Published
2013-10-17
Volume
3
Issue
1
Pages
2967-2967
ISSN
2045-2322 (ISSN-L)
OpenAlex
W1975340384
Cited by
301
References
19
FWCI
4.94
Type
journal article
Language
en
Open access
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CoChat. (2026). Citation check: Resonant Transparency and Non-Trivial Non-Radiating Excitations in Toroidal Metamaterials. https://app.cochat.ai/papers/10.1038/srep02967
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Fedotov, V. A., Rogacheva, A. V., Savinov, V., Tsai, D. P., & Zheludev, N. I. (2013). Resonant Transparency and Non-Trivial Non-Radiating Excitations in Toroidal Metamaterials. Scientific Reports. https://doi.org/10.1038/srep02967

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