Die u:cris Detailansicht:
Ferrogels cross-linked by magnetic particles
- Autor(en)
- Rudolf Weeber, Sofia Kantorovich, Christian Holm
- Abstrakt
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.
- Organisation(en)
- Computergestützte Physik und Physik der Weichen Materie
- Externe Organisation(en)
- Universität Stuttgart, Ural Federal University
- Journal
- Journal of Chemical Physics
- Band
- 143
- Anzahl der Seiten
- 11
- ISSN
- 0021-9606
- DOI
- https://doi.org/10.1063/1.4932371
- Publikationsdatum
- 10-2015
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103015 Kondensierte Materie, 103023 Polymerphysik, 103006 Chemische Physik, 103017 Magnetismus
- Schlagwörter
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie, Physical and Theoretical Chemistry
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/784ac525-0409-492e-ba2f-70d71e7cb162