执行机构
材料科学
人工肌肉
弯曲
软机器人
自愈水凝胶
复合材料
变形(气象学)
夹持器
磁场
极限抗拉强度
智能材料
纳米技术
机械工程
计算机科学
工程类
高分子化学
人工智能
物理
量子力学
作者
Yanduo Zhai,Chen Gong,Jinghua Chen,Chunyu Chang
标识
DOI:10.1016/j.cej.2023.147088
摘要
Ingenious design of soft actuators with high mechanical performance, rapid actuation, and programmable deformation is necessary for their practical applications in the fields of artificial muscles, smart textiles, and soft robotics. Here we used a facile magnetic-field induction strategy to fabricate programmable actuators composed of tough hydrogel fibers. The anisotropic hydrogel fibers that consisted of dual physically cross-linked networks showed high tensile strength (28.9 MPa), while the asymmetric distribution of magnetic nanoparticles in hydrogel networks endowed the actuators with rapid bending velocity (3.2°·min−1·mm−1) in response to solvents. The pick-and-place manipulation of objects from ethanol to water were demonstrated by using the soft grippers composed of asymmetric hydrogel fibers. Furthermore, smart curtains that were woven by hydrogel fibers automatically rolled up or spread out in response to the change of ambient humidity. This work proved that tough hydrogel fibers fabricated by our magnetic-field induction strategy provided more possibilities in the field of soft actuators.
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