磁场作用下软质复合材料的可切换粘附
Switchable Adhesion of Soft Composites Induced by a Magnetic Field
摘要：
可切换粘合剂有可能改善零件的制造和回收，并为软机器人提供新的运动模式。在这里，我们展示了两相复合材料对非磁性物体的磁性可切换粘附。该复合材料的连续相是硅酮弹性体，分散相是磁流变流体。该复合材料制备简单，并可模塑成不同的形状。当施加磁场时，磁流变流体产生屈服应力，这显著增强了复合材料的粘合性能。我们证明了一个9倍的增加的非磁性物体的拉脱力在一个250 mT的领域的存在。
英文摘要：
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 mould to 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.
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