Magnetic filament brushes
- Author(s)
- Pedro A. Sánchez, Elena S. Pyanzina, Ekaterina V. Novak, Joan J. Cerdà, Tomás Sintes, Sofia S. Kantorovich
- Abstract
We present a theoretical study on the design of a supramolecular magnetoresponsive coating. The coating is formed by a relatively dense array of supracolloidal magnetic filaments grafted to a surface in a polymer brush-like arrangement. In order to determine and optimise the properties of the magnetic filament brush, we perform extensive computer simulations with a coarse-grained model that takes into account the correlations between the magnetic moments of the particles and the backbone crosslinks. We show that the self-assembly of magnetic beads from neighbouring filaments defines the equilibrium structural properties of the complete brush. In order to control this self-assembly, we highlight two external stimuli that can lead to significant effects: temperature of the system and an externally applied magnetic field. Our study reveals self-assembly scenarios inherently driven by the crosslinking and grafting constraints. Finally, we explain the mechanisms of structural changeovers in the magnetic filament brushes and confirm the possibility of controlling them by changing the temperature or the intensity of an external magnetic field.
- Organisation(s)
- Computational and Soft Matter Physics
- External organisation(s)
- University of Bergen (UiB), Ural Federal University
- Journal
- Faraday Discussions
- Volume
- 186
- Pages
- 241-263
- No. of pages
- 23
- ISSN
- 1359-6640
- DOI
- https://doi.org/10.1039/C5FD00133A
- Publication date
- 2015
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103015 Condensed matter, 103006 Chemical physics, 103017 Magnetism
- Keywords
- ASJC Scopus subject areas
- General Medicine
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/8baa5059-7e59-4056-aab5-7a58c1b1af19