Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

Abstract: The waveguide modes in chemically‐grown silver nanowires on silicon nitride substrates are observed using spectrally‐ and spatially‐resolved cathodoluminescence (CL) excited by high‐energy electrons in a scanning electron microscope. The presence of a long‐range, travelling surface plasmon mode modulates the coupling efficiency of the incident electron energy into the nanowires, which is observed as oscillations in the measured CL with the point of excitation by the focused electron beam. The experimental data are modeled using the theory of surface plasmon polariton modes in cylindrical metal waveguides, enabling the complex mode wavenumbers and excitation strength of the long‐range surface plasmon mode to be extracted. The experiments yield insight into the energy transfer mechanisms between fast electrons and coherent oscillations in surface charge density in metal nanowires and the relative amplitudes of the radiative processes excited in the wire by the electron.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires ; day:08 ; month:04 ; year:2023 ; extent:9
Small ; (08.04.2023) (gesamt 9)

Creator
Liu, Amelia C. Y.
Davis, Timothy J.
Coenen, Toon
Hari, Sangeetha
Voortman, Lenard M.
Xu, Zhou
Yuan, Gangcheng
Ballard, Patrycja M.
Funston, Alison M.
Etheridge, Joanne

DOI
10.1002/smll.202207747
URN
urn:nbn:de:101:1-2023040815145876818833
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:55 AM CEST

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Associated

  • Liu, Amelia C. Y.
  • Davis, Timothy J.
  • Coenen, Toon
  • Hari, Sangeetha
  • Voortman, Lenard M.
  • Xu, Zhou
  • Yuan, Gangcheng
  • Ballard, Patrycja M.
  • Funston, Alison M.
  • Etheridge, Joanne

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