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Issue 25, 2020

Switchable adhesion of soft composites induced by a magnetic field

Author affiliations

Abstract

Switchable adhesives have the potential to improve the manufacturing and recycling of parts, and to enable new modes of motility for soft robots. Here, we demonstrate magnetically-switchable adhesion of a two-phase composite to non-magnetic objects. The composite's continuous phase is a silicone elastomer, and the dispersed phase is a magneto-rheological fluid. The composite is simple to prepare, and to mold into different shapes. When a magnetic field is applied, the magneto-rheological fluid develops a yield stress, which dramatically enhances the composite's adhesive properties. We demonstrate up to a nine-fold increase of the pull-off force of non-magnetic objects in the presence of a 250 mT field.

Graphical abstract: Switchable adhesion of soft composites induced by a magnetic field

Supplementary files

Article information


Submitted
09 Apr 2020
Accepted
15 May 2020
First published
29 May 2020

This article is Open Access

Soft Matter, 2020,16, 5806-5811
Article type
Communication

Switchable adhesion of soft composites induced by a magnetic field

P. Testa, B. Chappuis, S. Kistler, R. W. Style, L. J. Heyderman and E. R. Dufresne, Soft Matter, 2020, 16, 5806 DOI: 10.1039/D0SM00626B

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