Liquefaction of water on the surface of anisotropic two-dimensional atomic layered black phosphorus

Jinlai Zhao, Jiajie Zhu, Rui Cao, Huide Wang, Zhinan Guo (), David K. Sang, Jiaoning Tang, Dianyuan Fan, Jianqing Li and Han Zhang ()
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Jinlai Zhao: Macau University of Science and Technology
Jiajie Zhu: Guangdong Research Center for Interfacial Engineering of Functional Materials
Rui Cao: Macau University of Science and Technology
Huide Wang: Shenzhen University
Zhinan Guo: Shenzhen University
David K. Sang: Shenzhen University
Jiaoning Tang: Guangdong Research Center for Interfacial Engineering of Functional Materials
Dianyuan Fan: Shenzhen University
Jianqing Li: Macau University of Science and Technology
Han Zhang: Shenzhen University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract The growth and wetting of water on two-dimensional(2D) materials are important to understand the development of 2D material based electronic, optoelectronic, and nanomechanical devices. Here, we visualize the liquefaction processes of water on the surface of graphene, MoS2 and black phosphorus (BP) via optical microscopy. We show that the shape of the water droplets forming on the surface of BP, which is anisotropic, is elliptical. In contrast, droplets are rounded when they form on the surface of graphene or MoS2, which do not possess orthometric anisotropy. Molecular simulations show that the anisotropic liquefaction process of water on the surface of BP is attributed to the different binding energies of H2O molecules on BP along the armchair and zigzag directions. The results not only reveal the anisotropic nature of water liquefaction on the BP surface but also provide a way for fast and nondestructive determination of the crystalline orientation of BP.

Date: 2019
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DOI: 10.1038/s41467-019-11937-9

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