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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: French-German Session: Simulation Methods and Modeling of Soft Matter IV
CPP 24.3: Vortrag
Dienstag, 10. März 2026, 12:00–12:15, ZEU/0255
In Silico Self-Assembly of Magnetic Colloidal Polymers with Magnetization Dynamics — •Deniz Mostarac1, Sofia Kantorovich2, and Philip J. Camp1 — 1School of Chemistry, University of Edingburgh, EH9 3FJ Edinburgh , United Kingdom — 2Computational and Soft Matter Physics, University of Vienna, Vienna, Austria
Polymer-like mesostructures formed by crosslinked magnetic nanoparticles (MNPs) have created a new class of stimuli-responsive materials magnetic colloidal polymers (MCPs) that show enhanced optical, thermal, mechanical, rheological, and adsorption properties compared to conventional magnetic fluids. The interplay between magnetic interactions and solvophilic/solvophobic forces produces complex, field-tunable self-assembly. In our previous work, we investigated isolated MCPs and showed that solvophobicity drives compact, magnetically frustrated conformations, with structural features determined by crosslink type and MNP properties. These distinctions strongly affect MCP dynamics under shear and external fields. In this contribution we study the self-assembly of solvophobic MCPs while explicitly modeling MNP magnetodynamics with finite anisotropy. Our simulations capture internal magnetization dynamics over long times and at system sizes sufficient for bulk behavior. We show that coupling between Brownian and Néel relaxation, together with nonlinear magnetization, yields distinct structural, magnetic, and dynamical features in MCP suspensions governed by solvophobicity and intrinsic NP magnetism.
Keywords: Magnetism; Polymers; Magnetodynamics; Self-assembly