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Ferromagnetism

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

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Updated: May 1, 2026

Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

Published on: February 4, 2013

Reshapable magnetic particles for morphology-controlled soft systems.

Sarah Schyck¹, Nitin Rajendra Madam¹, Laura Rossi¹

¹Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands. l.rossi@tudelft.nl.

|April 2, 2025

Summary

This summary is machine-generated.

Researchers developed magnetic polymeric microparticles using a simple emulsion evaporation method. These particles are highly malleable, allowing reshaping for advanced applications in robotics and drug delivery.

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Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology

Background:

Spherical polymeric particles are widely used in self-assembly and bioseparation.
Incorporating functional components into polymers uniformly is challenging.

Purpose of the Study:

To develop a method for fabricating magnetic-loaded polymeric microparticles.
To investigate the malleability and reshaping capabilities of these composite particles.

Main Methods:

Emulsion evaporation technique.
Fabrication of magnetic-loaded polymeric microparticles.
Mechanical stretching for particle reshaping.

Main Results:

Achieved uniform magnetic-loaded polymeric microparticles.
Demonstrated exceptional particle malleability and reshaping into ellipsoids.
Maintained magnetic functionality after reshaping.

Conclusions:

The emulsion evaporation method is a scalable and versatile approach for creating functional microparticles.
These malleable magnetic microparticles have potential in soft robotics, drug delivery, and magnetically responsive systems.