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Wood Robot with Magnetic Anisotropy for Programmable Locomotion
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-11-29 , DOI: 10.1002/adfm.202207209 Lianzhen Li 1 , Ziqiang Shang 2 , Jianfu Tang 1 , Jiameng Li 3 , Zefang Xiao 1 , Yanjun Xie 1 , Jiuqing Liu 2 , Zhenjie Li 2 , Shilong Yang 3 , Yiqi Liu 2 , Wentao Gan 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-11-29 , DOI: 10.1002/adfm.202207209 Lianzhen Li 1 , Ziqiang Shang 2 , Jianfu Tang 1 , Jiameng Li 3 , Zefang Xiao 1 , Yanjun Xie 1 , Jiuqing Liu 2 , Zhenjie Li 2 , Shilong Yang 3 , Yiqi Liu 2 , Wentao Gan 1
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The development of environmentally-friendly stimuli-responsive materials is vital to green electronics, sensors, and biomedicine. However, fast responsiveness and precise locomotion control of biomass materials have not been accomplished. Herein, a magnetically responsive wood is reported that can achieve programmable locomotion in the rotating magnetic field. The magnetized wood is fabricated by removing lignin from the cell walls, which produces a porous microstructure, enabling facile and stable combination between NdFeB and wood. With the directional arrangement of magnetic moments after magnetization, the magnetized wood with obviously positive and negative magnetic poles is magnetic stability, and can complete various movements including spatial flipping, bypass obstacles, climb up, and down under the driven by magnetic torques. Meanwhile, the magnetized wood is lightweight (0.26 g cm−3), showing a fast walking speed of up to 11.3 mm s−1 under magnetic actuation (10 mT and 0.6 Hz), which is greater than those of petroleum-based polymeric materials. Benefitting from the unique porous structure, the magnetized wood can be used as the drug-carrier to deliver and release nano-cargoes effectively. This approach expands the range of stimuli-responsive materials beyond hydrogel, elastomers, and synthetic polymer, inspiring the creation of next-generation intelligent robots based on biocompatible and sustainable biomass materials.
中文翻译：
用于可编程运动的具有磁各向异性的木材机器人
开发环境友好的刺激响应材料对于绿色电子、传感器和生物医学至关重要。然而，生物质材料的快速响应和精确运动控制尚未实现。在此，报道了一种磁响应木材，可以在旋转磁场中实现可编程运动。磁化木材是通过去除细胞壁中的木质素而制成的，木质素会产生多孔微结构，从而使 NdFeB 与木材之间能够轻松稳定地结合。随着磁化后磁矩的定向排列，具有明显正负磁极的磁化木具有磁性稳定性，可以在磁力矩的驱动下完成空间翻转、绕过障碍物、爬上爬下等多种运动。同时，−3 )，在磁驱动（10 mT 和 0.6 Hz）下显示出高达 11.3 mm s −1的快速行走速度，这大于石油基聚合物材料。得益于独特的多孔结构，磁化木材可用作药物载体，有效地递送和释放纳米货物。这种方法将刺激响应材料的范围扩展到水凝胶、弹性体和合成聚合物之外，激发了基于生物相容性和可持续生物质材料的下一代智能机器人的创造。
更新日期：2022-11-29
中文翻译：
用于可编程运动的具有磁各向异性的木材机器人
开发环境友好的刺激响应材料对于绿色电子、传感器和生物医学至关重要。然而，生物质材料的快速响应和精确运动控制尚未实现。在此，报道了一种磁响应木材，可以在旋转磁场中实现可编程运动。磁化木材是通过去除细胞壁中的木质素而制成的，木质素会产生多孔微结构，从而使 NdFeB 与木材之间能够轻松稳定地结合。随着磁化后磁矩的定向排列，具有明显正负磁极的磁化木具有磁性稳定性，可以在磁力矩的驱动下完成空间翻转、绕过障碍物、爬上爬下等多种运动。同时，−3 )，在磁驱动（10 mT 和 0.6 Hz）下显示出高达 11.3 mm s −1的快速行走速度，这大于石油基聚合物材料。得益于独特的多孔结构，磁化木材可用作药物载体，有效地递送和释放纳米货物。这种方法将刺激响应材料的范围扩展到水凝胶、弹性体和合成聚合物之外，激发了基于生物相容性和可持续生物质材料的下一代智能机器人的创造。
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