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Updated: Jul 6, 2025
09:39
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
938
Stretchable and negative-Poisson-ratio porous metamaterials.
Xiaoyu Zhang1, Qi Sun1, Xing Liang1
1Interdisciplinary Materials Research Center, Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China.
Nature Communications
|January 9, 2024
Summary
Researchers developed highly stretchable, conductive porous elastomers using hot-pressing. These materials, with tunable Poisson
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Highly stretchable porous materials are crucial for flexible electronics but challenging to fabricate.
- Existing materials often lack sufficient stretchability or tunable mechanical properties.
Purpose of the Study:
- To develop a versatile strategy for fabricating highly stretchable conductive porous elastomers.
- To achieve materials with low or negative Poisson's ratios for advanced applications.
Main Methods:
- Fabrication of reduced graphene oxide/polymer nanocomposite elastomers.
- Application of uniaxial, biaxial, and triaxial hot-pressing strategies.
- Tuning porous microstructures through stretching.
Main Results:
- Uniaxial hot pressing yielded elastomers with folded porous structures, achieving 1200% strain.
- Biaxial/triaxial hot pressing produced meta-elastomers with reentrant structures and negative Poisson's ratios.
- Wearable strain sensors demonstrated an ultrawide response range (0-1200%).
Conclusions:
- A versatile strategy for creating highly stretchable, negative Poisson's ratio porous materials was established.
- These materials show potential for flexible electronics, smart thermal management, and electromagnetic interference shielding.
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