Document Type : Review Article

Author

• Changfang Zhao

Tsinghua University

Abstract

Metamaterials are a class of periodic or aperiodic artificial microstructures with unusual physical properties. Their unique and controllable properties provide rich design inspiration for human technology products. Negative Poisson’s ratio (NPR) metamaterial, also known as auxetic metamaterial, is a kind of mechanical metamaterial that can produce NPR effect different from common materials in nature, and has a long history of development and a wide range of application scenarios. This paper mainly reports the basic characteristics, development process and research content of auxetic metamaterial, and makes corresponding analysis and prospect, aiming to popularize its concept and explore its development potential in the field of mechanics. However, it should be noted that with the development of new technologies such as additive manufacturing and artificial intelligence, the future of auxetic metamaterial is still full of uncertainties. To this end, the design of new configurations, the coupling of new functions and the implementation of new applications may become concerns, which will make auxetic metamaterials more interesting.

Graphical Abstract

Keywords

• mechanical metamaterials
• auxetic metamaterials
• negative Poisson's ratio (NPR)
• mechanical properties
• microstructures

Main Subjects

• Metamaterials