| Title | 3D Temporary-Magnetized Soft Robotic Structures for Enhanced Energy Harvesting |
| Authors | Miao, Liming Song, Yu Ren, Zhongyang Xu, Chen Wan, Ji Wang, Haobin Guo, Hang Xiang, Zehua Han, Mengdi Zhang, Haixia |
| Affiliation | Peking Univ, Inst Microelect, Natl Key Lab Nanomicro Fabricat Technol, Beijing 100871, Peoples R China CALTECH, Div Engn & Appl Sci, Dept Med Engn, Pasadena, CA 91125 USA Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China Peking Univ, Coll Future Technol, Dept Biomed Engn, Beijing 100871, Peoples R China |
| Keywords | ELECTRONICS |
| Issue Date | Aug-2021 |
| Publisher | ADVANCED MATERIALS |
| Abstract | The advent of functional materials offers tremendous potential in a broad variety of areas such as electronics, robotics, and energy devices. Magnetic materials are an attractive candidate that enable multifunctional devices with capabilities in both sensing and actuation. However, current magnetic devices, especially those with complex motion modalities, rely on permanently magnetized materials with complicated, non-uniform magnetization profiles. Here, based on magnetic materials with temporary-magnetization, a mechanically guided assembly process successfully converts laser-patterned 2D magnetic materials into judiciously engineered 3D structures, with dimensions and geometries ranging from mesoscale 3D filaments, to arrayed centimeter-scale 3D membranes. With tailorable mechanical properties and highly adjustable geometries, 3D soft structures can exhibit various tethered locomotions under the precise control of magnetic fields, including local deformation, unidirectional tilting, and omnidirectional rotation, and can serve as dynamic surfaces for further integration with other functional materials or devices. Examples demonstrated here focus on energy-harvesting systems, including 3D piezoelectric devices for noncontact conversion of mechanical energy and active motion sensing, as well as 3D solar tracking systems. The design strategy and resulting magnetic-controlled 3D soft structures hold great promise not only for enhanced energy harvesting, but also for multimodal sensing, robotic interfaces, and biomedical devices. |
| URI | http://hdl.handle.net/20.500.11897/623647 |
| ISSN | 0935-9648 |
| DOI | 10.1002/adma.202102691 |
| Indexed | EI SCI(E) |
| Appears in Collections: | 信息科学技术学院 前沿交叉学科研究院 工学院 |
