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Updated: May 12, 2026
11:57
Fabricating Metamaterials Using the Fiber Drawing Method
Published on: October 18, 2012
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Electro-Thermally Controlled Active Mechanical Metamaterials with Programmable Stiffness and Nonreciprocity
Jai Dunne1, Robert D Crapnell1, Krzysztof K Dudek2
1Faculty of Science and Engineering, Dalton Building, Manchester Metropolitan University, Manchester, M1 5GD, UK.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 29, 2025
Summary
This study introduces an active mechanical metamaterial that remotely switches between compression and shear modes, drastically altering stiffness. This innovation enables programmable control over material properties for advanced applications.
Area of Science:
- Materials Science
- Mechanical Engineering
- Robotics
Background:
- Active mechanical metamaterials offer tunable properties by switching between states.
- Controlled instabilities are key to achieving programmable material behavior.
Purpose of the Study:
- To present a novel active mechanical metamaterial capable of remote switching between compressive and shear deformation modes.
- To demonstrate the modulation of stiffness, traction, and pressure using this metamaterial.
Main Methods:
- Utilizing electro-thermally activated beams that change buckling modes when heated.
- Incorporating a compliant mechanism to overcome manufacturing imperfections and ensure reliable control.
- Computational analysis to validate the modulation of surface properties.
Main Results:
- The metamaterial successfully switches between deformation modes, causing significant stiffness changes.
- Manufacturing imperfections are mitigated through a compliant mechanism.
- Computational results show pressure can be doubled and traction shielded across surfaces.
Conclusions:
- The developed active mechanical metamaterial offers reliable, remotely programmable control over stiffness and surface properties.
- Potential applications include robotic grippers and medical devices requiring adaptable interfaces.
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