2D Metamaterials: Designing Mechanical Metamaterials with Kirigami‐Inspired, Hierarchical Constructions for Giant Positive and Negative Thermal Expansion (Adv. Mater. 3/2021). Issue 3 (19th January 2021)

• Record Type: Journal Article
• Authors: Guo, Xiaogang; Ni, Xiaoyue; Li, Jiahong; Zhang, Hang; Zhang, Fan; Yu, Huabin; Wu, Jun; Bai, Yun; Lei, Hongshuai; Huang, Yonggang; Rogers, John A.; Zhang, Yihui
• Is Part Of: Advanced materials. Volume 33:Issue 3(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-19
• Subjects: giant positive and negative CTEs -- hierarchical structures -- kirigami designs -- mechanical metamaterials -- unusual thermal responses; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202170016
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : In article number 2004919, John A. Rogers, Yihui Zhang, and co‐workers present design concepts and fabrication strategies for a kirigami‐inspired class of 2D hierarchical metamaterials. At large filling ratios (>50%), these systems offer not only unprecedented biaxial CTE (i.e., −5950 and 10710 ppm K −1 ), but also large biaxial thermal expansion properties (>21% for 20 K temperature increase), unachievable previously.