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Journal article

Numerical simulation of Electron Energy Loss Spectroscopy using a Generalized Multipole Technique

In Ultramicroscopy — 2013, Volume 133, pp. 101-108

By Kiewidt, Lars1; Karamehmedović, Mirza; Matyssek, Christian; Hergert, Wolfram; Mädler, Lutz; Wriedt, Thomas

From

Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Badgasteiner Str. 3, 28359 Bremen, Germany.1

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.

Language: English
Year: 2013
Pages: 101-108
ISSN: 18792723 and 03043991
Types: Journal article
DOI: 10.1016/j.ultramic.2013.07.001
Keywords

Characterization Computational modeling Electron Energy Loss Spectroscopy Electrons Generalized Multipole Technique Models, Theoretical Nanoparticles Nanoplasmonics Spectroscopy, Electron Energy-Loss

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