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Remotely Triggered Assembly of 3D Mesostructures Through Shape‐Memory Effects
Author(s) -
Park Jun Kyu,
Nan Kewang,
Luan Haiwen,
Zheng Ning,
Zhao Shiwei,
Zhang Hang,
Cheng Xu,
Wang Heling,
Li Kan,
Xie Tao,
Huang Yonggang,
Zhang Yihui,
Kim Seok,
Rogers John A.
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201905715
Subject(s) - control reconfiguration , materials science , shape memory polymer , microsystem , shape memory alloy , nanotechnology , 3d printing , range (aeronautics) , computer science , mechanical engineering , embedded system , composite material , engineering
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.