Switchable adhesion of soft composites induced by a magnetic field.,Soft Matter

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Switchable adhesion of soft composites induced by a magnetic field.
Soft Matter ( IF 2.9 ) Pub Date : 2020-05-29 , DOI: 10.1039/d0sm00626b
Paolo Testa ₁ , Benoît Chappuis , Sabrina Kistler , Robert W Style , Laura J Heyderman , Eric R Dufresne

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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.

中文翻译：

磁场引起的软质复合材料的可切换粘合力。

可转换粘合剂具有改善零件制造和回收利用的潜力，并为软机器人提供了新的动力模式。在这里，我们演示了两相复合材料对非磁性物体的磁性可切换粘合。复合材料的连续相是有机硅弹性体，分散相是磁流变流体。该复合材料易于制备，并且可以模制成不同的形状。当施加磁场时，磁流变液会产生屈服应力，从而极大地增强复合材料的粘合性能。我们证明了在250 mT磁场下非磁性物体的拉力最多可增加9倍。

更新日期：2020-07-01

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