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Internal dynamics of magnetic particles during the production and magnetomechanical loading of structured magnetic elastomers – experimental investigations

Günter K. Auernhammer

Subproject Leader

Dr. Günter K. Auernhammer

+49 351 4658 486

Konstantin Gerstenberger

DFG-financed Research Assistant

Dipl. Ing. Konstantin Gerstenberger

+49 351 4658 540

Stefan Michel

Research Engineer

Dipl.-Chem. Ing. Stefan Michel

+49 351 4658 371

Subproject description

The subproject builds on previous work by the subproject leader, which demonstrates that:

i) Magnetic particle chains in elastic matrices respond to orthogonal magnetic fields with instabilities.

ii) Groups of magnetic particles can undergo significant structural changes when magnetic fields are altered.

The project's goal is to investigate the formation process of structured magnetic elastomers and the factors that influence it. The focus is on two main aspects:

Firstly, the interaction between the migration of magnetic particles and the cross-linking kinetics of the elastomer will be explored. The objective is to determine whether targeted particle arrangements can be achieved by applying variable magnetic fields during production. To this end, the timescales of chemical cross-linking and magnetically induced particle motion, as well as magnetic field parameters, will be systematically varied.

Bild Teilprojekt AU

Secondly, the magnetomechanical properties of the particle arrangements will be examined: How do they respond to variable magnetic fields, and which arrangements are particularly active? An optimized magnetic setup will be designed to conduct the experiments.

Close collaboration with other research groups provides additional insights into particle dynamics, macroscopic analysis, and public outreach.

The writing of this text was assisted by AI - view original

Last Modification: 10.08.2025 -
Contact Person: Till Willig