Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102340
Title: Ferrogels cross-linked by magnetic particles: Field-driven deformation and elasticity studied using computer simulations
Authors: Weeber, R.
Kantorovich, S.
Holm, C.
Issue Date: 2015
Publisher: American Institute of Physics Inc.
Citation: Weeber R. Ferrogels cross-linked by magnetic particles: Field-driven deformation and elasticity studied using computer simulations / R. Weeber, S. Kantorovich, C. Holm. — DOI 10.1063/1.4932371 // Journal of Chemical Physics. — 2015. — Vol. 143. — Iss. 15. — 154901.
Abstract: Ferrogels, i.e., swollen polymer networks into which magnetic particles are immersed, can be considered as "smart materials" since their shape and elasticity can be controlled by an external magnetic field. Using molecular dynamics simulations on the coarse-grained level, we study a ferrogel in which the magnetic particles act as the cross-linkers of the polymer network. In a homogeneous external magnetic field, the direct coupling between the orientation of the magnetic moments and the polymers by means of covalent bonds gives rise to a deformation of the gel, independent of the interparticle dipole-dipole interaction. In this paper, we quantify this deformation, and, in particular, we investigate the gel's elastic moduli and its magnetic response for two different connectivities of the network nodes. Our results demonstrate that these properties depend significantly on the topology of the polymer network. � 2015 AIP Publishing LLC.
Keywords: DEFORMATION
ELASTICITY
MAGNETIC FIELDS
MAGNETIC MOMENTS
MOLECULAR DYNAMICS
POLYMERS
DIPOLE DIPOLE INTERACTIONS
DIRECT COUPLING
EXTERNAL MAGNETIC FIELD
MAGNETIC PARTICLE
MAGNETIC RESPONSE
MOLECULAR DYNAMICS SIMULATIONS
POLYMER NETWORKS
SWOLLEN POLYMERS
MAGNETISM
URI: http://hdl.handle.net/10995/102340
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84945255197
PURE ID: 543374
06bf5c5d-f8d2-496e-b179-f2dfe549f3f6
ISSN: 219606
DOI: 10.1063/1.4932371
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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