Magnetic-field induced shape memory hydrogels for deformable actuators

作者：Ye Tian, Zhirui Xu, Qi Hao, Xiaojun Lu, Ting Jiang, Liqian Wang, Guang Zhang, Rui Xiao, Huaping Wu · 发表于：Soft Matter · 年份：2024 · DOI：10.1039/d4sm00248b · 被引用次数：16 · 研究领域：Advanced Materials and Mechanics、Hydrogels: synthesis, properties, applications、Micro and Nano Robotics

particles renders the hydrogels soft when subjected to an alternating current field, facilitating their deformation under the influence of an actuation magnetic field. After the elimination of the alternating current magnetic field, the hydrogels stiffen and attain a fixed actuated shape in the absence of any external magnetic field. Moreover, this remarkable magnetic shape memory hydrogel is effectively employed as an underwater soft gripper for lifting heavy objects. This work provides a novel strategy for fabricating magnetic hydrogels with non-contact reversible actuation deformation, tunable stiffness and shape locking.