期刊
ADVANCED MATERIALS
卷 31, 期 52, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201905715
关键词
3D mesostructures; aquatic robots; remotely triggered 3D assembly; shape-memory polymers; stretchable devices
类别
资金
- Army Research Office
- National Natural Science Foundation of China [11672152, 11722217]
- Tsinghua National Laboratory for Information Science and Technology
- NSF [CMMI1400169, CMMI1534120, CMMI1635443]
3D structures that incorporate high-performance electronic materials and allow for remote, on-demand 3D shape reconfiguration are of interest for applications that range from ingestible medical devices and microrobotics to tunable optoelectronics. Here, materials and design approaches are introduced for assembly of such systems via controlled mechanical buckling of 2D precursors built on shape-memory polymer (SMP) substrates. The temporary shape fixing and recovery of SMPs, governed by thermomechanical loading, provide deterministic control over the assembly and reconfiguration processes, including a range of mechanical manipulations facilitated by the elastic and highly stretchable properties of the materials. Experimental demonstrations include 3D mesostructures of various geometries and length scales, as well as 3D aquatic platforms that can change trajectories and release small objects on demand. The results create many opportunities for advanced, programmable 3D microsystem technologies.
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