Suspensions of magnetic nanogels at zero field: Equilibrium structural properties
| Autor: | Pedro A. Sánchez, Elena S. Minina, Ivan S. Novikau, Sofia S. Kantorovich |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Structure factor FOS: Physical sciences Thermal fluctuations 02 engineering and technology Magnetic particle inspection Condensed Matter - Soft Condensed Matter STRUCTURAL PROPERTIES STRUCTURE FACTORS 01 natural sciences Langevin dynamics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ASSOCIATION REACTIONS SELF ASSEMBLY 0103 physical sciences NANOPARTICLES EQUILIBRIUM STRUCTURAL PROPERTIES Soft matter SUSPENSIONS (COMPONENTS) PARTICLE INTERACTIONS 010302 applied physics Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Materials Science (cond-mat.mtrl-sci) NANOSTRUCTURED MATERIALS INTER-PARTICLE INTERACTION DISTRIBUTION FUNCTIONS 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetic self-assembly SUSPENSIONS (FLUIDS) MAGNETIC NANO-PARTICLES Chemical physics NANOMAGNETICS Volume fraction Soft Condensed Matter (cond-mat.soft) Magnetic nanoparticles MOLECULAR DYNAMICS MAGNETIC PARTICLE CLUSTERS 0210 nano-technology RADIAL DISTRIBUTION FUNCTIONS Magnetic nanogels Nanogel |
| Zdroj: | Journal of Magnetism and Magnetic Materials 498(2020), 166152 J Magn Magn Mater Journal of Magnetism and Magnetic Materials arXiv:1911.06031 [cond-mat.soft]: https://arxiv.org/abs/1911.06031v1 |
| Popis: | 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. International Conference on Magnetic Fluids - ICMF 2019 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|