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Issue 4, 2018

Large diffusion anisotropy and orientation sorting of phosphorene nanoflakes under a temperature gradient

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Abstract

We perform molecular dynamics simulations to investigate the motion of phosphorene nanoflakes on a large graphene substrate under a thermal gradient. It is found that the atomic interaction between the graphene substrate and the phosphorene nanoflake generates distinct rates of motion for phosphorene nanoflakes with different orientations. Remarkably, for square phosphorene nanoflakes, the motion of zigzag-oriented nanoflakes is 2-fold faster than those of armchair-oriented and randomly-oriented nanoflakes. This large diffusion anisotropy suggests that sorting of phosphorene nanoflakes into specific orientations can be realized by a temperature gradient. The findings here provide interesting insights into strong molecular diffusion anisotropy and offer a novel route for manipulating two-dimensional materials.

Graphical abstract: Large diffusion anisotropy and orientation sorting of phosphorene nanoflakes under a temperature gradient

Supplementary files

Article information


Submitted
28 Sep 2017
Accepted
19 Dec 2017
First published
20 Dec 2017

Nanoscale, 2018,10, 1660-1666
Article type
Paper

Large diffusion anisotropy and orientation sorting of phosphorene nanoflakes under a temperature gradient

Y. Cheng, G. Zhang, Y. Zhang, T. Chang, Q. Pei, Y. Cai and Y. Zhang, Nanoscale, 2018, 10, 1660 DOI: 10.1039/C7NR07226K

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