Highly tunable anisotropic co-deformation of black phosphorene superlattices
| Autor: | Jinyang Jiang, Shu Jian Chen, Jianxiong Miao, Qianhui Zhang, Wenhui Duan |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nanoscale. 12:19787-19796 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/d0nr04781c |
| Popis: | Controlling mechanical deformation is one of the state-of-the-art approaches to tune the electronic properties of 2D materials. We report a new mechanism for tuning a phosphorene superlattice with intercalated amphiphiles by its strong anisotropic co-deformation. Anisotropic co-deformation of a phosphorene superlattice is found to follow tunable sinusoidal and Gaussian functions, which exhibit adjustable mechanical actuation, curvature and layer separations. We analysed the controlling mechanism and tuning strategy of co-deformation as a function of amphiphile assembly topology, van der Waals interactions, interlayer separation and global deformation based on Euler-beam theory. Our first-principles calculations demonstrate that the co-deformation mechanism can be used to achieve a theoretical bandgap tunability of 0.7 eV and a transition between direct and indirect bandgaps. The reported tuning mechanisms pave new ways for designing a wide range of tunable functional electronics, sensors and actuators. |
| Databáze: | OpenAIRE |
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