Related Experiment Video
Updated: Aug 3, 2025
11:57
Fabricating Metamaterials Using the Fiber Drawing Method
Published on: October 18, 2012
13.9K
Auxetic Kirigami Metamaterials upon Large Stretching
Chen Du1, Yiqiang Wang1, Zhan Kang1
1State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Dalian University of Technology, Dalian 116024, China.
ACS Applied Materials & Interfaces
|April 7, 2023
Summary
This study introduces novel kirigami metamaterials (KMs) that maintain their auxetic properties under significant strain by utilizing out-of-plane buckling. These advanced KMs offer enhanced performance for applications requiring stretchability and shape retention.
Area of Science:
- Materials Science
- Mechanical Engineering
- Metamaterials
Background:
- Auxetic kirigami metamaterials (KMs) exhibit negative Poisson's ratios due to in-plane deformation.
- Existing thin KMs lose auxeticity under large strains due to out-of-plane buckling and stress failure in thicker variants.
Purpose of the Study:
- To design a novel family of KMs that exploit out-of-plane buckling to achieve and maintain auxeticity under large strains (up to 0.50).
- To investigate the unique properties and potential applications of these new KMs.
Main Methods:
- Development of a new KM design model incorporating out-of-plane buckling.
- Numerical simulations and experimental validation of the designed KMs.
Main Results:
- The designed KMs successfully realize and retain auxeticity up to 0.50 applied strains.
- Exhibited unique properties include designable negative Poisson's ratios, sheet thickness-insensitive auxeticity, and excellent shape recoverability.
- Demonstrated potential application as a stretchable display without image distortion.
Conclusions:
- The proposed auxetic KMs overcome limitations of existing designs by leveraging controlled buckling.
- These KMs offer new design possibilities for functional devices in robotics, bio-medical engineering, and flexible electronics.
