| Autor: |
(李瑞), Rui Li, (张聪), Cong Zhang, (李家文), Jiawen Li, (张亚超), Yachao Zhang, (刘顺利), Shunli Liu, (胡衍雷), Yanlei Hu, (蒋绍军), Shaojun Jiang, (陈超), Chao Chen, (辛晨), Chen Xin, (陶源), Yuan Tao, (董彬), Bin Dong, (吴东), Dong Wu, (褚家如), Jiaru Chu |
| Předmět: |
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| Zdroj: |
National Science Review; Nov2022, Vol. 9 Issue 11, p1-12, 12p |
| Abstrakt: |
Inspired by origami/kirigami, three-dimensional (3D) mesostructures assembled via a mechanics-guided approach, with reversible and maneuverable shape-morphing capabilities, have attracted great interest with regard to a broad range of applications. Despite intensive studies, the development of morphable 3D mesostructures with high-order (multi-degree-of-freedom) deformation and untethered high-frequency actuation remains challenging. This work introduces a scheme for a magnetically encoded transferable 3D mesostructure, with polyethylene terephthalate (PET) film as the skeleton and discrete magnetic domains as actuation units, to address this challenge. The high-order deformation, including hierarchical, multidirectional and blending shape morphing, is realized by encoding 3D discrete magnetization profiles on the architecture through ultraviolet curing. Reconfigurable 3D mesostructures with a modest structural modulus (∼3 GPa) enable both high-frequency (∼55 Hz) and large-deformation (∼66.8%) actuation under an alternating magnetic field. Additionally, combined with the shape-retention and adhesion property of PET, these 3D mesostructures can be readily transferred and attached to many solid substrates. On this basis, diverse functional devices, including a switchable colour letter display, liquid mixer, sequential flashlight and biomimetic sliding robot, are demonstrated to offer new perspectives for robotics and microelectronics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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