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Mesoscale morphology of airborne core-shell nanoparticle clusters: x-ray laser coherent diffraction imaging
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2013 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 46, no 16 SI, 164033- p.Article in journal (Refereed) Published
Abstract [en]

Unraveling the complex morphology of functional materials like core-shell 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 core-shell 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 similar to 10 nm core diameter and similar to 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 core-shell nanomaterials are a solid base for future time-resolved studies of dynamic phenomena in complex nanoparticulate matter using x-ray lasers.

Place, publisher, year, edition, pages
2013. Vol. 46, no 16 SI, 164033- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-210260DOI: 10.1088/0953-4075/46/16/164033ISI: 000323113100034OAI: oai:DiVA.org:uu-210260DiVA: diva2:661875
Available from: 2013-11-05 Created: 2013-11-04 Last updated: 2017-12-06Bibliographically approved

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Ekeberg, TomasHantke, MaxMaia, Filipe R. N. C.

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