摘要
Anisotropy, as an exotic degree of freedom, enables us to discover emergent two-dimensional (2D) layered nanomaterials with low in-plane symmetry and explore their outstanding properties and promising applications. 2D black arsenic (b-As) with a puckered structure has garnered increasing attention these years owing to its extreme anisotropy with respect to its electrical, thermal, and optical properties. However, investigation on the mechanical properties of 2D b-As is still lacking despite much effort on theoretical simulations. Herein, we report the highly anisotropic elastic properties of suspended b-As nanoribbons via atomic force microscopy-based nanoindentation. It was found that the extracted Young’s modulus of b-As nanoribbons exhibits remarkable anisotropy, which approximates 72.2 ± 5.4 and 44.3 ± 1.4 GPa along zigzag and armchair directions, respectively. The anisotropic ratio reaches up to ∼1.6. We expect that these results could lay a solid foundation for the potential applications of 2D anisotropic nanomaterials in next-generation nanomechanics and optoelectronics.
源语言 | 英语 |
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页(从-至) | 23542-23547 |
页数 | 6 |
期刊 | ACS Applied Nano Materials |
卷 | 6 |
期 | 24 |
DOI | |
出版状态 | 已出版 - 22 12月 2023 |