Abstract
The authors propose the realization of a torsional actuator based on a soft magnetoelastic material. The paper investigates the response of different spatial arrangements of magnetizable particles enclosed by a soft elastic sphere and identifies those structures showing a maximized twist deformation under saturating external magnetic fields.
Highlights
Torsional actuators respond by a twist-type deformation to external stimuli
To generate magnetoelastic twist actuators in the form of magnetic gels or elastomers, we suggest to build on the following previously explored insights
We have suggested a way to construct soft torsional actuators using magnetic gels and elastomers
Summary
Torsional actuators respond by a twist-type deformation to external stimuli. Most studies are concerned with linear actuators that contract or elongate along a certain axis upon actuation. One possible route to generate torsional actuators may be to twist these chainlike aggregates, before the particle positions are fixed in the material by the final chemical crosslinking and establishing of the elastic polymeric matrix. Under the presence of strong homogeneous external magnetic fields, uniaxially ordered chainlike aggregates of the magnetized particles form They get locked into the sample by the generated surrounding elastic environment resulting from the quick action of the first crosslinker [26,27,28,31,32,33,50,51].
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