Magneto-thermomechanically triggered active mechanical metamaterials -- untethered, reversible, reprogrammable transformations with shape locking

Future active metamaterials for reconfigurable structural applications require fast, untethered, reversible, and reprogrammable (multimodal) transformability with shape locking. Herein, we aim to construct and demonstrate a magneto-thermomechanical tool that enables a single material system to trans...

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Bibliographic Details
Published in:arXiv.org 2022-07
Main Authors: Zou, Bihui, Liang, Zihe, Cui, Zhiming, Xiao, Kai, Shao, Shuang, Ju, Jaehyung
Format: Article
Language:English
Subjects:
Chemical synthesis
Locking
Magnetic control
Martensitic transformations
Metamaterials
Morphing
Prestressing
Shape memory
Structural stability
Thermomechanical properties
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Summary:Future active metamaterials for reconfigurable structural applications require fast, untethered, reversible, and reprogrammable (multimodal) transformability with shape locking. Herein, we aim to construct and demonstrate a magneto-thermomechanical tool that enables a single material system to transform with untethered, reversible, low-powered reprogrammable deformations and shape locking via the application of magneto-thermomechanically triggered prestress on a shape memory polymer and structural instability with asymmetric magnetic torque. We demonstrate the mutual assistance of two physics concepts - magnetic control combined with the thermomechanical behavior of shape memory polymers, without requiring new materials synthesis and high-power energy for reprogramming. Our approach can open a new path of active metamaterials, flexible yet stiff soft robots, and multimodal morphing structures, where we can design them in reversible and reprogrammable ways.
ISSN:2331-8422
DOI:10.48550/arxiv.2207.03177