As one of the most fascinating confined water/ice phenomena, two-dimensional square ice has been extensively studied and experimentally confirmed in recent years. Apart from the unidirectional homogeneous square icing patterns considered in previous studies, the multidirectional partitioned square icing patterns are discovered in this study and characterized by molecular dynamics (MD) simulations. Square icing parameters are proposed to quantitatively distinguish the partitioned patterns from the homogeneous patterns and the liquid water. The number of graphene monolayers n is varied in this study, and the results show that it is more energetically favorable to form partitioned square icing patterns when the water molecules are confined between graphite sheets (n ≥ 2) compared to graphene (n = 1). This phenomenon is insensitive to n as long as n ≥ 2 because of the short-range nature of the interaction between water molecules and the carbon substrate. Moreover, it is energetically unfavorable to form partitioned square icing patterns for a single layer of water molecules even for n ≥ 2, verifying that the interaction between layers of water molecules is another dominant factor in the formation of partitioned structures. The conversion from partitioned structure to homogeneous square patterns is investigated by changing the pressure and the temperature. Based on the comprehensive MD simulations, this study unveils the formation mechanism of the partitioned square icing patterns.
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21 April 2022
Research Article|
April 21 2022
Two-dimensional partitioned square ice confined in graphene/graphite nanocapillaries Available to Purchase
Zhen Zeng;
Zhen Zeng
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
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Tianyou Wang;
Tianyou Wang
a)
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
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Rui Chen
;
Rui Chen
2
Department of Aeronautical and Automotive Engineering, Loughborough University
, Loughborough LE11 3TU, United Kingdom
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Mengshan Suo;
Mengshan Suo
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
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Kai Sun;
Kai Sun
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
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Panagiotis E. Theodorakis
;
Panagiotis E. Theodorakis
3
Institute of Physics, Polish Academy of Sciences
, Al. Lotników 32/46, 02-668 Warsaw, Poland
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Zhizhao Che
Zhizhao Che
a)
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
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Zhen Zeng
1
Tianyou Wang
1,a)
Rui Chen
2
Mengshan Suo
1
Kai Sun
1
Panagiotis E. Theodorakis
3
Zhizhao Che
1,a)
1
State Key Laboratory of Engines, Tianjin University
, Tianjin 300072, China
2
Department of Aeronautical and Automotive Engineering, Loughborough University
, Loughborough LE11 3TU, United Kingdom
3
Institute of Physics, Polish Academy of Sciences
, Al. Lotników 32/46, 02-668 Warsaw, Poland
J. Chem. Phys. 156, 154510 (2022)
Article history
Received:
February 08 2022
Accepted:
April 05 2022
Citation
Zhen Zeng, Tianyou Wang, Rui Chen, Mengshan Suo, Kai Sun, Panagiotis E. Theodorakis, Zhizhao Che; Two-dimensional partitioned square ice confined in graphene/graphite nanocapillaries. J. Chem. Phys. 21 April 2022; 156 (15): 154510. https://doi.org/10.1063/5.0087690
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