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Article: Novel 2D metamaterials with negative Poisson's ratio and negative thermal expansion

TitleNovel 2D metamaterials with negative Poisson's ratio and negative thermal expansion
Authors
Keywords3D printing
Mechanical metamaterials
Negative Poisson's ratio
Negative thermal expansion
Numerical simulation
Issue Date2019
Citation
Extreme Mechanics Letters, 2019, v. 30, article no. 100498 How to Cite?
AbstractIt is known that metamaterials with negative Poisson's ratio (NPR) can be designed to possess negative thermal expansion (NTE) property. However, it is uncommon to use NTE structures to obtain NPR behavior. In this paper, based on a typical NTE unit structure, two novel meta-structures with auxetic behavior are proposed, which are demonstrated by the micro-scale mechanical experiments and numerical simulations. By changing the angle of the structure, the Poisson's ratio of the structures could be positive, zero and negative. The extreme negative Poisson's ratio of the structures is about -0.94. Moreover, the thermal expansion of the novel 2D structures can also be designed and modulated to be positive, zero and negative. This concept of building 2D metamaterials with NPR in this study would open up new avenues to understand and design metamaterials with NPR and NTE for potential engineering applications, such as smart sensors and electronic components.
Persistent Identifierhttp://hdl.handle.net/10722/326416
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, Xiang-
dc.contributor.authorGao, Libo-
dc.contributor.authorZhou, Wenzhao-
dc.contributor.authorWang, Yuejiao-
dc.contributor.authorLu, Yang-
dc.date.accessioned2023-03-09T10:00:30Z-
dc.date.available2023-03-09T10:00:30Z-
dc.date.issued2019-
dc.identifier.citationExtreme Mechanics Letters, 2019, v. 30, article no. 100498-
dc.identifier.urihttp://hdl.handle.net/10722/326416-
dc.description.abstractIt is known that metamaterials with negative Poisson's ratio (NPR) can be designed to possess negative thermal expansion (NTE) property. However, it is uncommon to use NTE structures to obtain NPR behavior. In this paper, based on a typical NTE unit structure, two novel meta-structures with auxetic behavior are proposed, which are demonstrated by the micro-scale mechanical experiments and numerical simulations. By changing the angle of the structure, the Poisson's ratio of the structures could be positive, zero and negative. The extreme negative Poisson's ratio of the structures is about -0.94. Moreover, the thermal expansion of the novel 2D structures can also be designed and modulated to be positive, zero and negative. This concept of building 2D metamaterials with NPR in this study would open up new avenues to understand and design metamaterials with NPR and NTE for potential engineering applications, such as smart sensors and electronic components.-
dc.languageeng-
dc.relation.ispartofExtreme Mechanics Letters-
dc.subject3D printing-
dc.subjectMechanical metamaterials-
dc.subjectNegative Poisson's ratio-
dc.subjectNegative thermal expansion-
dc.subjectNumerical simulation-
dc.titleNovel 2D metamaterials with negative Poisson's ratio and negative thermal expansion-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.eml.2019.100498-
dc.identifier.scopuseid_2-s2.0-85067232350-
dc.identifier.volume30-
dc.identifier.spagearticle no. 100498-
dc.identifier.epagearticle no. 100498-
dc.identifier.eissn2352-4316-
dc.identifier.isiWOS:000477989000005-

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