Interplay between steric and hydrodynamic interactions for ellipsoidal magnetic nanoparticles in a polymer suspension

• DOI: 10.1039/d2sm01428a
• Publication Date: 2023-01-13T11:53:22Z
• Authors: Patrick Kreissl; Christian Holm; Rudolf Weeber
• Keywords: Suspension; Particle (ecology)

Magnetic nanoparticles couple to polymeric environments by several mechanisms. These include van der Waals, steric, hydrodynamic and electrostatic forces. This leads numerous interesting effects potential applications. Still, the details of coupling are often unknown. In a previous work, we showed that, for spherical particles, alone can explain experimentally observed trends in magnetic AC susceptibility spectra [P. Kreissl, C. Holm R. Weeber, Soft Matter, 2021, 17, 174-183]. Non-spherical, elongated particles interest because an enhanced surrounding polymers is expected. this publication study interplay steric interactions between those polymer suspension. To end, obtain rotational friction coefficients, relaxation times moment, spectra, compare these simulations with without considered. We show even if particle ellipsoidal, its much stronger than ones due shape-anisotropy particle.