期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 16, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.202100322
关键词
architected materials; auxetics; mechanical metamaterials; negative linear compressibility; negative Poisson's ratios; negative thermal expansion
资金
- project A-ROW - Malta Council for Science & Technology through FUSION: The R&I Technology Development Programme 2018 [RI-2017-033-T]
The article explores how ancient symmetrical esthetic artifacts have been transformed into functional auxetics through mechanisms in the field of mechanical metamaterials and architected materials. It focuses on the important role and various implementations of rotating rigid units at different scales of structure.
Auxetics display the anomalous property of expanding laterally when uniaxially stretched, that is, a negative Poisson's ratio, a property that arises from 1) the presence of specific geometric features within the nano/macrostructure of the material and 2) amenable deformations in response to the applied stimulus. Herein, how ancient symmetrical esthetic artifacts have been transformed to functional auxetics through mechanisms that have ripened the field of mechanical metamaterials and architected materials in the last decades is explored. In particular, the important role and various implementations, both in 2D and 3D, of rotating rigid units, which range from rotating squares to much more complex renditions at various scales of structure, are looked at. The role of rotating rigid units to generate negative thermal expansion and negative compressibility is also delved into.
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