Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101535
Title: The influence of an applied magnetic field on the self-assembly of magnetic nanogels
Authors: Novikau, I. S.
Sánchez, P. A.
Kantorovich, S. S.
Issue Date: 2020
Publisher: Elsevier B.V.
Citation: Novikau I. S. The influence of an applied magnetic field on the self-assembly of magnetic nanogels / I. S. Novikau, P. A. Sánchez, S. S. Kantorovich. — DOI 10.1016/j.molliq.2020.112902 // Journal of Molecular Liquids. — 2020. — Vol. 307. — 112902.
Abstract: Using Langevin dynamics simulations, we investigate the self-assembly of magnetic nanogels in the presence of applied magnetic fields of moderate strength. We find that even weak fields lead to drastic changes in the structure factors of both, the embedded magnetic nanoparticles and of whole nanogel particles. Nanogels assemble by uniting magnetic particle clusters forming inter-gel bridges. At zero field the average amount of such bridges for a pair of nanogels is close to one, whereas even for weak fields it fastly doubles. Rapid growth of cluster size at low values of the applied field is followed by a broad region of slow increase, caused by the mechanical constraints imposed the polymer matrix. The influence of the latter manifests itself in both, the slow growth of the magnetisation curve at intermediate fields and the slow decay of the total Zeeman energy. © 2020
Keywords: MAGNETIC NANOGELS
MOLECULAR DYNAMICS
SELF-ASSEMBLY
MAGNETIC FIELDS
MOLECULAR DYNAMICS
NANOSTRUCTURED MATERIALS
SELF ASSEMBLY
APPLIED MAGNETIC FIELDS
INTERMEDIATE FIELDS
LANGEVIN DYNAMICS
MAGNETIC NANOGELS
MAGNETIC PARTICLE CLUSTERS
MAGNETISATION CURVES
MECHANICAL CONSTRAINTS
STRUCTURE FACTORS
MAGNETIC NANOPARTICLES
URI: http://hdl.handle.net/10995/101535
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85083697779
PURE ID: 12653236
5c8a923d-6307-45ff-af5c-728fecf57c77
ISSN: 1677322
DOI: 10.1016/j.molliq.2020.112902
metadata.dc.description.sponsorship: This research has been supported by the Russian Science Foundation Grant 19-72-00209 . Authors are grateful to A. O. Ivanov for valuable discussions concerning structure factors and to E. S. Pyanzina for providing the code for calculation of chain partition functions in an applied magnetic field. The work was also supported by the FWF START-Projekt Y 627-N27 . Simulations were performed in the Vienna Scientific Cluster (VSC3).
RSCF project card: 19-72-00209
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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