Numerical simulation of electron energy loss spectroscopy using a generalized multipole technique

Lars Kiewidt, Mirza Karamehmedović*, Christian Matyssek, Wolfram Hergert, Lutz Mädler, Thomas Wriedt

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

We numerically simulate low-loss Electron Energy Loss Spectroscopy (EELS) of isolated spheroidal nanoparticles, using an electromagnetic model based on a Generalized Multipole Technique (GMT). The GMT is fast and accurate, and, in principle, flexible regarding nanoparticle shape and the incident electron beam. The implemented method is validated against reference analytical and numerical methods for plane-wave scattering by spherical and spheroidal nanoparticles. Also, simulated electron energy loss (EEL) spectra of spherical and spheroidal nanoparticles are compared to available analytical and numerical solutions. An EEL spectrum is predicted numerically for a prolate spheroidal aluminum nanoparticle. The presented method is the basis for a powerful tool for the computation, analysis and interpretation of EEL spectra of general geometric configurations.

Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalUltramicroscopy
Volume133
DOIs
Publication statusPublished - Oct 2013
Externally publishedYes

Keywords

  • Characterization
  • Computational modeling
  • Electron Energy Loss Spectroscopy
  • Generalized Multipole Technique
  • Nanoparticles
  • Nanoplasmonics

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