Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101652
Title: Suspensions of magnetic nanogels at zero field: Equilibrium structural properties
Authors: Novikau, I. S.
Minina, E. S.
Sánchez, P. A.
Kantorovich, S. S.
Issue Date: 2020
Publisher: Elsevier B.V.
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.
Keywords: LANGEVIN DYNAMICS
MAGNETIC NANOGELS
MAGNETIC SELF-ASSEMBLY
STRUCTURE FACTOR
ASSOCIATION REACTIONS
DISTRIBUTION FUNCTIONS
MOLECULAR DYNAMICS
NANOMAGNETICS
NANOPARTICLES
NANOSTRUCTURED MATERIALS
PARTICLE INTERACTIONS
SELF ASSEMBLY
STRUCTURAL PROPERTIES
SUSPENSIONS (FLUIDS)
EQUILIBRIUM STRUCTURAL PROPERTIES
INTER-PARTICLE INTERACTION
LANGEVIN DYNAMICS
MAGNETIC NANO-PARTICLES
MAGNETIC NANOGELS
MAGNETIC PARTICLE CLUSTERS
RADIAL DISTRIBUTION FUNCTIONS
STRUCTURE FACTORS
SUSPENSIONS (COMPONENTS)
URI: http://hdl.handle.net/10995/101652
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85075870228
PURE ID: 11746698
a429b78c-9e86-443d-85a4-7d5a1559d89b
ISSN: 3048853
DOI: 10.1016/j.jmmm.2019.166152
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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