Magnetically encoded 3D mesostructure with high-order shape morphing and high-frequency actuation  

作　　者：Rui Li Cong Zhang Jiawen Li Yachao Zhang Shunli Liu Yanlei Hu Shaojun Jiang Chao Chen Chen Xin Yuan Tao Bin Dong Dong Wu Jiaru Chu 李瑞;张聪;李家文;张亚超;刘顺利;胡衍雷;蒋绍军;陈超;辛晨;陶源;董彬;吴东;褚家如(Hefei National Laboratory for Physical Sciences at the Microscale,CAS Key Laboratory of Mechanical Behavior and Design of Materials,Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes,Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230027,China)

机构地区：[1]Hefei National Laboratory for Physical Sciences at the Microscale,CAS Key Laboratory of Mechanical Behavior and Design of Materials,Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes,Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230027,China

出　　处：《National Science Review》2022年第11期177-188,共12页国家科学评论（英文版）

基　　金：supported by the National Natural Science Foundation of China (52075516, 61927814, 51875544and 51675503);the National Key R&D Program of China(2021YFF0502702);the Major Scientific and Technological Projects in Anhui Province (202103a05020005);the Fundamental Research Funds for the Central Universities (YD2090002005,WK2090050048 and WK5290000001);the Youth Innovation Promotion Association,Chinese Academy of Sciences(2017495)

摘　　要：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.

关 键 词：morphable 3D mesostructures magnetically encoded high-order deformation high-frequency actuation 

分 类 号：TB34[一般工业技术—材料科学与工程]