10.6084/m9.figshare.1012510.v1
E Pedersoli
E
Pedersoli
A J Nelson
A
J Nelson
J Bozek
J
Bozek
C Bostedt
C
Bostedt
D Starodub
D
Starodub
R G Sierra
R
G Sierra
C Y Hampton
C
Y Hampton
F Capotondi
F
Capotondi
N D Loh
N
D Loh
M Aslam
M
Aslam
(a)–(c), (g)–(i) Selection of diffraction patterns and (d)–(f), (j)–(l) respective iterative phase-retrieval reconstruction of the real space image of clusters of Co@SiO<sub>2</sub> NPs irradiated with x-rays pulses of 777 eV photon energy
IOP Publishing
2013
nanoparticle
nm
cdi
laser
diameter
diffraction patterns
Linac Coherent Light Source
core
understanding mesoscopic morphology
pulse
nanoparticulate matter
Atomic Physics
Molecular Physics
2013-08-13 00:00:00
Figure
https://iop.figshare.com/articles/figure/_a_c_g_i_Selection_of_diffraction_patterns_and_d_f_j_l_respective_iterative_phase_retrieval_reconstr/1012510
<p><strong>Figure 3.</strong> (a)–(c), (g)–(i) Selection of diffraction patterns and (d)–(f), (j)–(l) respective iterative phase-retrieval reconstruction of the real space image of clusters of Co@SiO<sub>2</sub> NPs irradiated with x-rays pulses of 777 eV photon energy.</p> <p><strong>Abstract</strong></p> <p>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@SiO<sub>2</sub> 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@SiO<sub>2</sub> 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 core–shell nanomaterials are a solid base for future time-resolved studies of dynamic phenomena in complex nanoparticulate matter using x-ray lasers.</p>