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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202003804
|2 doi
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|a pubmed24n1057.xml
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|a (DE-627)NLM317371975
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|a (NLM)33169472
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Odit, Mikhail
|e verfasserin
|4 aut
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| 245 |
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|a Observation of Supercavity Modes in Subwavelength Dielectric Resonators
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 04.01.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 Wiley-VCH GmbH.
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|a Electromagnetic response of dielectric resonators with high refractive index is governed by optically induced electric and magnetic Mie resonances facilitating confinement of light with the amplitude enhancement. Traditionally, strong subwavelength trapping of light was associated only with plasmonic or epsilon-near-zero structures, which however suffer from material losses. Recently, an alternative localization mechanism was proposed allowing the trapping of light in individual subwavelength optical resonators with a high quality factor in the regime of a supercavity mode. Here, the experimental observation of the supercavity modes in subwavelength ceramic resonators in the radio-frequency range is presented. It is experimentally demonstrated that the regime of supercavity modes can be achieved via precise tuning of the resonator's dimensions. A huge growth of the unloaded quality factor is achieved with experimental values up to 1.25 × 104 , limited only by material losses of ceramics. It is revealed that the supercavity modes can be excited efficiently both in the near- and far-field. In both cases, the supercavity mode manifests itself explicitly as a Fano resonance with characteristic peculiarities of spectral shape and radiation pattern. A comparison of supercavities made of diversified materials for the visible, infrared, THz, and radio-frequency regimes is provided
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|a Journal Article
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|a Fano resonances
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4 |
|a Mie resonances
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4 |
|a bound states in the continuum
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| 650 |
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4 |
|a dielectric resonators
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4 |
|a metaoptics
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| 650 |
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4 |
|a photonics
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| 650 |
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4 |
|a supercavity modes
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| 700 |
1 |
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|a Koshelev, Kirill
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gladyshev, Sergey
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ladutenko, Konstantin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kivshar, Yuri
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bogdanov, Andrey
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 1 vom: 10. Jan., Seite e2003804
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:1
|g day:10
|g month:01
|g pages:e2003804
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|u http://dx.doi.org/10.1002/adma.202003804
|3 Volltext
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