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

Author:

Li Rui,Zhang Cong,Li Jiawen,Zhang YachaoORCID,Liu Shunli,Hu Yanlei,Jiang Shaojun,Chen Chao,Xin Chen,Tao Yuan,Dong Bin,Wu Dong,Chu Jiaru

Abstract

Abstract 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.

Funder

National Natural Science Foundation of China

National Key Research and Development of China

Natural Science Foundation of Anhui Province

Fundamental Research Funds for the Central Universities

Chinese Academy of Sciences

Publisher

Oxford University Press (OUP)

Subject

Multidisciplinary

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