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|Title:||Suspensions of magnetic nanogels at zero field: Equilibrium structural properties|
|Authors:||Novikau, I. S.|
Minina, E. S.
Sánchez, P. A.
Kantorovich, S. S.
|Citation:||Suspensions of magnetic nanogels at zero field: Equilibrium structural properties / I. S. Novikau, E. S. Minina, P. A. Sánchez, et al. — DOI 10.1016/j.jmmm.2019.166152 // Journal of Magnetism and Magnetic Materials. — 2020. — Vol. 498. — 166152.|
|Abstract:||Magnetic nanogels represent a cutting edge of magnetic soft matter research due to their numerous potential applications. Here, using Langevin dynamics simulations, we analyse the influence of magnetic nanogel concentration and embedded magnetic particle interactions on the self-assembly of magnetic nanogels at zero field. For this, we calculated radial distribution functions and structure factors for nanogels and magnetic particles within them. We found that, in comparison to suspensions of free magnetic nanoparticles, where the self-assembly is already observed if the interparticle interaction strength exceeds the thermal fluctuations by approximately a factor of three, self-assembly of magnetic nanogels only takes place by increasing such ratio above six. This magnetic nanogel self-assembly is realised by means of favourable close contacts between magnetic nanoparticles from different nanogels. It turns out that for high values of interparticle interactions, corresponding to the formation of internal rings in isolated nanogels, in their suspensions larger magnetic particle clusters with lower elastic penalty can be formed by involving different nanogels. Finally, we show that when the self-assembly of these nanogels takes place, it has a drastic effect on the structural properties even if the volume fraction of magnetic nanoparticles is low. © 2019 Elsevier B.V.|
EQUILIBRIUM STRUCTURAL PROPERTIES
MAGNETIC PARTICLE CLUSTERS
RADIAL DISTRIBUTION FUNCTIONS
|metadata.dc.description.sponsorship:||This research has been supported by the Russian Science Foundation Grant No. 19-12-00209 . Authors acknowledge support from the Austrian Research Fund (FWF), START-Projekt Y 627-N27. Computer simulations were performed at the Vienna Scientific Cluster (VSC-3).|
|RSCF project card:||19-12-00209|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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