Mesoscale morphology of airborne core-shell nanoparticle clusters: X-ray laser coherent diffraction imaging

Pedersoli, E, Loh, D, Capotondi, F and Martin, A 2013, 'Mesoscale morphology of airborne core-shell nanoparticle clusters: X-ray laser coherent diffraction imaging', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 46, no. 16, 164033, pp. 1-10.


Document type: Journal Article
Collection: Journal Articles

Title Mesoscale morphology of airborne core-shell nanoparticle clusters: X-ray laser coherent diffraction imaging
Author(s) Pedersoli, E
Loh, D
Capotondi, F
Martin, A
Year 2013
Journal name Journal of Physics B: Atomic, Molecular and Optical Physics
Volume number 46
Issue number 16
Article Number 164033
Start page 1
End page 10
Total pages 10
Publisher Institute of Physics Publishing Ltd.
Abstract Unraveling the complex morphology of functional materials like coreshell nanoparticles and its evolution in different environments is still a challenge. Only recently has the single-particle coherent diffraction imaging (CDI), enabled by the ultrabright femtosecond free-electron laser pulses, provided breakthroughs in understanding mesoscopic morphology of nanoparticulate matter. Here, we report the first CDI results for Co@SiO2 coreshell nanoparticles randomly clustered in large airborne aggregates, obtained using the x-ray free-electron laser at the Linac Coherent Light Source. Our experimental results compare favourably with simulated diffraction patterns for clustered Co@SiO2 nanoparticles with ~10 nm core diameter and ~30 nm shell outer diameter, which confirms the ability to resolve the mesoscale morphology of complex metastable structures. The findings in this first morphological study of coreshell nanomaterials are a solid base for future time-resolved studies of dynamic phenomena in complex nanoparticulate matter using x-ray lasers.
Subject Condensed Matter Imaging
DOI - identifier 10.1088/0953-4075/46/16/164033
Copyright notice © 2013 Institute of Physics Publishing Ltd.
ISSN 0953-4075
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