Variant Plateau’s law in atomically thin transition metal dichalcogenide dome networks

Boqing Liu, Tanju Yildirim, Tieyu Lü, Elena Blundo, Li Wang, Lixue Jiang, Hongshuai Zou, Lijun Zhang, Huijun Zhao, Zongyou Yin, Fangbao Tian, Antonio Polimeni () and Yuerui Lu ()
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Boqing Liu: The Australian National University
Tanju Yildirim: National Institute for Materials Science (NIMS)
Tieyu Lü: Xiamen University
Elena Blundo: Dipartimento di Fisica Sapienza Università di Roma
Li Wang: University of New South Wales
Lixue Jiang: Gold Coast Campus, Griffith University
Hongshuai Zou: Jilin University
Lijun Zhang: Jilin University
Huijun Zhao: Gold Coast Campus, Griffith University
Zongyou Yin: The Australian National University
Fangbao Tian: University of New South Wales
Antonio Polimeni: Dipartimento di Fisica Sapienza Università di Roma
Yuerui Lu: The Australian National University

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Since its fundamental inception from soap bubbles, Plateau’s law has sparked extensive research in equilibrated states. However, most studies primarily relied on liquids, foams or cellular structures, whereas its applicability has yet to be explored in nano-scale solid films. Here, we observed a variant Plateau’s law in networks of atomically thin domes made of solid two-dimensional (2D) transition metal dichalcogenides (TMDs). Discrete layer-dependent van der Waals (vdWs) interaction energies were experimentally and theoretically obtained for domes protruding in different TMD layers. Significant surface tension differences from layer-dependent vdWs interaction energies manifest in a variant of this fundamental law. The equivalent surface tension ranges from 2.4 to 3.6 N/m, around two orders of magnitude greater than conventional liquid films, enabling domes to sustain high gas pressure and exist in a fundamentally variant nature for several years. Our findings pave the way towards exploring variant discretised states with applications in opto-electro-mechanical devices.

Date: 2023
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DOI: 10.1038/s41467-023-36565-2

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