Electron Energy Loss Spectroscopy of Singular Plasmonic Metasurfaces
Abstract: Singular plasmonic metasurfaces, which feature sharp edges or ultra‐small gaps, are characterized by a continuous excitation spectrum that results in broadband light‐harvesting properties. In this paper, an analytical study of the electron energy loss spectroscopy (EELS) of this kind of metasurfaces is presented. Making use of transformation optics, the response of singular metasurfaces is studied when interacting with a moving electron both in the frequency and time domains. This allows gaining a deeper understanding of the surface plasmon compression at the singularities, which is responsible for the broadband spectra, as well as of the effect of blunt singularities and nonlocality in the metal. Two instances of singular metasurfaces are considered: one with sharp singularities in the form of sharp angle grooves, and one with smooth singularities in the form of two nearly touching surfaces.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Electron Energy Loss Spectroscopy of Singular Plasmonic Metasurfaces ; volume:14 ; number:8 ; year:2020 ; extent:8
Laser & photonics reviews ; 14, Heft 8 (2020) (gesamt 8)
- Creator
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Yang, Fan
Huidobro, Paloma Arroyo
Pendry, J. B.
- DOI
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10.1002/lpor.202000055
- URN
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urn:nbn:de:101:1-2022070107251067950840
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:22 AM CEST
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Associated
- Yang, Fan
- Huidobro, Paloma Arroyo
- Pendry, J. B.
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