Multi-Field Synergy Manipulating Soft Polymeric Hydrogel Transformers
Multi-Field Synergy Manipulating Soft Polymeric Hydrogel Transformers
复制标题
多场协同操纵软聚合物水凝胶变压器
DOI：
10.1002/aisy.202000208
复制
发表时间：
2021-04-01
影响因子：
7.4
通讯作者：
Chen, Tao
中科院分区：
文献类型：
--
作者：
Zhang, Dachuan;Zhang, Jiawei;Chen, Tao
变形金刚是一种可以根据外界环境变化而变形的虚拟硬机器人，智能软变形金刚的研究具有重要意义。在此，提出了一种基于形状记忆水凝胶系统的新型远程控制软变压器。该水凝胶是将Fe 3 O 4磁性纳米粒子嵌入聚（N-（2-羟乙基）丙烯酰胺）-明胶双网络结构中得到的。明胶的可逆卷曲-三螺旋转变使该水凝胶具有形状记忆和自修复行为。Fe 3 O 4纳米粒子的引入提供了光热加热和磁操纵功能。水凝胶在磁场中导航时可以变形，并且变形的形状可以被固定，并且形状恢复也可以在光照射的辅助下完成。利用磁驱动和光辅助的形状记忆技术，可以实现远程控制的形状记忆过程。此外，还制造了一系列软机器人，包括可以做仰卧起坐的水凝胶运动员，可以变形并通过迷宫导航的水凝胶变形金刚，可以在空中停靠的水凝胶空间站和水凝胶航天器。这一工作将为设计和制备具有协同功能的新型智能聚合物体系提供启发。
Transformers are imaginary hard robots that could deform into various shapes according to external circumstances, and the development of intelligent soft Transformers is of great interest. Herein, novel remotely controlled soft Transformers based on a shape memory hydrogel system is proposed. The hydrogel is obtained by embedding Fe3O4 magnetic nanoparticles into a poly(N-(2-hydroxyethyl) acrylamide)-gelatin double network structure. The reversible coil-triple-helix transformation of gelatin renders the hydrogel with shape memory and self-healing behaviors. The introduction of Fe3O4 nanoparticles provides both photothermal heating and magnetic manipulation functions. The hydrogel can deform on navigation in a magnetic field, and the deformed shape can be fixed and shape recovery can also be accomplished with the assistance of light irradiation. Taking advantage of the magnetically driven actuation and light-assisted shape memory, remotely controlled shape memory process can be accomplished. Moreover, a series of soft robots, including hydrogel athlete which can do sit-ups, hydrogel Transformers that can deform and navigate through a maze, hydrogel space station and hydrogel spacecraft that can be docked in the air, are fabricated. This work will inspire the design and fabrication of novel smart polymer systems with synergistic functions.