Clustering analysis strategies for electron energy loss spectroscopy (EELS)

Pau Torruella, Marta Estrader, Alberto López-Ortega, Maria Dolors Baró, Maria Varela, Francesca Peiró, Sònia Estradé

    Research output: Contribution to journalArticleResearchpeer-review

    4 Citations (Scopus)

    Abstract

    © 2017 Elsevier B.V. In this work, the use of cluster analysis algorithms, widely applied in the field of big data, is proposed to explore and analyze electron energy loss spectroscopy (EELS) data sets. Three different data clustering approaches have been tested both with simulated and experimental data from Fe3O4/Mn3O4 core/shell nanoparticles. The first method consists on applying data clustering directly to the acquired spectra. A second approach is to analyze spectral variance with principal component analysis (PCA) within a given data cluster. Lastly, data clustering on PCA score maps is discussed. The advantages and requirements of each approach are studied. Results demonstrate how clustering is able to recover compositional and oxidation state information from EELS data with minimal user input, giving great prospects for its usage in EEL spectroscopy.
    Original languageEnglish
    Pages (from-to)42-48
    JournalUltramicroscopy
    Volume185
    DOIs
    Publication statusPublished - 1 Feb 2018

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