Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

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

doi:10.1002/smll.202207747

Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

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

Research output: Contribution to journal › Article › Research › peer-review

4 Citations (Scopus)

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.

Original language	English
Article number	2207747
Number of pages	9
Journal	Small
Volume	19
Issue number	33
DOIs	https://doi.org/10.1002/smll.202207747
Publication status	Published - 16 Aug 2023

Keywords

cathodoluminescence
nanowires
scanning electron microscopy
silver
surface plasmon polariton

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10.1002/smll.202207747Licence: CC BY-NC-ND

Cite this

@article{03048823692948faaadb39ab74e1acc5,

title = "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.",

keywords = "cathodoluminescence, nanowires, scanning electron microscopy, silver, surface plasmon polariton",

author = "Liu, {Amelia C.Y.} and Davis, {Timothy J.} and Toon Coenen and Sangeetha Hari and Voortman, {Lenard M.} and Zhou Xu and Gangcheng Yuan and Ballard, {Patrycja M.} and Funston, {Alison M.} and Joanne Etheridge",

note = "Funding Information: A.C.Y.L. and T.J.D. contributed equally to this work. The authors acknowledge the use of the instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. This research used equipment funded by Australian Research Council grant (LE140100104). A.C.Y.L. acknowledges funding from the Australian Research Council (FT180100594). This work was supported by the Australian Research Council (ARC) through the ARC Centre of Excellence in Exciton Science, CE170100026. A.C.Y.L. and J.E. acknowledge support from the Australian Academy of Technology and Engineering (Global Connections Bridging Grant 414669063). A.C.Y.L. and A.F. acknowledge support from the Science Faculty, Monash University. T.C. and S.H. acknowledge funding from the European Research Council under the Eurpoean Union's Horizon 2020 research and innovation programme under grant agreement 101017720 (FET‐Proactive EBEAM). The authors gratefully acknowledge the use of the SECOM and Thermo Fisher Verios 460 in Imaging Physics at TU Delft and discussions with Jacob Hoogenboom and Pieter Kruit. Publisher Copyright: {\textcopyright} 2023 The Authors. Small published by Wiley-VCH GmbH.",

year = "2023",

month = aug,

day = "16",

doi = "10.1002/smll.202207747",

language = "English",

volume = "19",

journal = "Small",

issn = "1613-6810",

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T1 - Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

AU - Liu, Amelia C.Y.

AU - Davis, Timothy J.

AU - Coenen, Toon

AU - Hari, Sangeetha

AU - Voortman, Lenard M.

AU - Xu, Zhou

AU - Yuan, Gangcheng

AU - Ballard, Patrycja M.

AU - Funston, Alison M.

AU - Etheridge, Joanne

N1 - Funding Information: A.C.Y.L. and T.J.D. contributed equally to this work. The authors acknowledge the use of the instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australia. This research used equipment funded by Australian Research Council grant (LE140100104). A.C.Y.L. acknowledges funding from the Australian Research Council (FT180100594). This work was supported by the Australian Research Council (ARC) through the ARC Centre of Excellence in Exciton Science, CE170100026. A.C.Y.L. and J.E. acknowledge support from the Australian Academy of Technology and Engineering (Global Connections Bridging Grant 414669063). A.C.Y.L. and A.F. acknowledge support from the Science Faculty, Monash University. T.C. and S.H. acknowledge funding from the European Research Council under the Eurpoean Union's Horizon 2020 research and innovation programme under grant agreement 101017720 (FET‐Proactive EBEAM). The authors gratefully acknowledge the use of the SECOM and Thermo Fisher Verios 460 in Imaging Physics at TU Delft and discussions with Jacob Hoogenboom and Pieter Kruit. Publisher Copyright: © 2023 The Authors. Small published by Wiley-VCH GmbH.

PY - 2023/8/16

Y1 - 2023/8/16

N2 - 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.

AB - 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.

KW - cathodoluminescence

KW - nanowires

KW - scanning electron microscopy

KW - silver

KW - surface plasmon polariton

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UR - https://figshare.com/articles/dataset/Cathodoluminescence_from_silver_nanowires/22014383

U2 - 10.1002/smll.202207747

DO - 10.1002/smll.202207747

M3 - Article

AN - SCOPUS:85151663621

SN - 1613-6810

VL - 19

JO - Small

JF - Small

IS - 33

M1 - 2207747

ER -

Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

Abstract

Keywords

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The role of structure in the formation and properties of glasses.

ARC Centre of Excellence in Exciton Science

Collaborative facility for high resolution fabrication, imaging, and characterisation for nanostructured materials

Centre for Electron Microscopy (MCEM)

Cite this

Modulation of Cathodoluminescence by Surface Plasmons in Silver Nanowires

Abstract

Keywords

Access to Document

Other files and links

Projects

The role of structure in the formation and properties of glasses.

ARC Centre of Excellence in Exciton Science

Collaborative facility for high resolution fabrication, imaging, and characterisation for nanostructured materials

Equipment

Centre for Electron Microscopy (MCEM)

Cite this