Intralayer Negative Poisson's Ratio in 2D Black Arsenic by Strain Engineering

Negative Poisson's ratio as the anomalous characteristic generally exists in artificial architectures, such as re‐entrant and honeycomb structures. The structures with negative Poisson's ratio have attracted intensive attention due to their unique auxetic effect and many promising applications in shear‐resistant and energy absorption fields. However, experimental observation of negative Poisson's ratio in natural materials barely happens, although various 2D layered materials are predicted in theory. Herein, the anisotropic Raman response and the intrinsic intralayer negative Poisson's ratio of 2D natural black arsenic (b‐As) via strain engineering strategy are reported. The results are evident by the detailed Raman spectrum of b‐As under uniaxial strain together with density functional theory calculations. It is found that b‐As is softer along the armchair than zigzag direction. The anisotropic mechanical features and van der Waals interactions play essential roles in strain‐dependent Raman shifts and negative Poisson's ratio in the natural b‐As along zigzag direction. This work may shed a light on the mechanical properties and potential applications of 2D puckered materials.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Intralayer Negative Poisson's Ratio in 2D Black Arsenic by Strain Engineering ; day:13 ; month:09 ; year:2023 ; extent:7 ; Small structures ; (13.09.2023) (gesamt 7)

Contributors, Places and Time

• Creator: Zhang, Jingjing ; Zhang, Weihan ; Zhang, Leining ; Du, Guoshuai ; Yu, Yunfei ; Xia, Qinglin ; Wu, Xu ; Wang, Yeliang ; Ji, Wei ; Qiao, Jingsi ; Ding, Feng ; Chen, Yabin

Further information

• DOI: 10.1002/sstr.202300178
• URN: urn:nbn:de:101:1-2023091415011798457589
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 11:01 AM CEST