SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 36: Magnetic Particles / Clusters
MA 36.6: Vortrag
Donnerstag, 30. März 2023, 10:45–11:00, HSZ 401
Monte Carlo simulation of the aggregation of confined superparamagnetic colloids — •Javier Valenzuela1,2, Francisco Gámez2, and Perla Viveros-Méndez3 — 1Fritz Haber Institute of the Max Planck Society, Berlin, Germany — 2Complutense University of Madrid, Madrid, Spain — 3Autonomous University of Zacatecas, Zacatecas, Mexico
The properties of colloidal suspensions of superparamagnetic nanoparticles confined within inorganic and organic cavities have led to a number of interesting applications in areas such as nanomedicine, microfluidics, and nanorobotics. Therefore, predicting the morphology of the structures formed during the aggregation process of these particles under different scenarios is of key scientific interest.
In this work, the Monte Carlo and cluster-moving Monte Carlo methods have been employed to study the aggregated structures formed by magnetic particles confined in spherical (3D) and circular (2D) cavities. The impact of the number of particles, their initial configuration and the pair-potential model between the particles and between the particles and the cavity surface on the aggregated structure is assessed. Moreover, we present an improvement of the cluster-moving Monte Carlo method to increase the computational performance under curved confinement situations. This work provides insights that might prove useful for the development of more efficient simulation strategies that could play a crucial role in the design and prediction of new applications of this relevant type of colloidal systems.