材料科学
分子动力学
偏转(物理)
纳米尺度
屈曲
模数
刚度
张力(地质)
复合材料
弯曲
弯曲模量
压缩(物理)
各向异性
双层
纳米技术
单层
抗弯刚度
抗弯强度
经典力学
计算化学
光学
膜
化学
物理
生物化学
作者
Peng Hao,Demin Zhao,Yalin Luan,Jianlin Liu,Qing Wang
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2021-01-11
卷期号:32 (14): 145701-145701
被引量:2
标识
DOI:10.1088/1361-6528/abd5e7
摘要
Black phosphorus (BP) is a novel two-dimensional nanostructure with wide potential applications in such areas as nanoresonators and nanosensors. In this study, we concentrate on the role of the bending stiffness of the BP monolayer in its mechanical performances, including tension, compression, buckling and bending. Firstly, the stress-strain curve and Young's modulus of the single layer black phosphorus (SLBP) nanoribbon with different chiral structures are obtained in the tension process via the molecular dynamics (MD) simulation. Next, the loading behavior of the SLBP nanoribbon during compression is simulated via MD. It was found that the bending stiffness of the nanoribbon has an essential effect on its postbuckling behaviors, and an empirical formula is proposed which can accurately depict the postbuckling process. Eventually, the bending properties of chiral SLBP nanoribbons are explored via the MD simulation, and the modified expression of the bending stiffness can better predict its large deflection. These findings are beneficial for us to fully understand mechanical responses of BP, which hold implications in engineering new materials and devices at nanoscale.
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