中国物理B ›› 2022, Vol. 31 ›› Issue (3): 36801-036801.doi: 10.1088/1674-1056/ac1e21

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Effect of an electric field on dewetting transition of nitrogen-water system

Qi Feng(冯琦), Jiaxian Li(厉嘉贤), Xiaoyan Zhou(周晓艳), and Hangjun Lu(陆杭军)   

  1. Department of Physics, Zhejiang Normal University, Jinhua 321004, China
  • 收稿日期:2021-07-10 修回日期:2021-08-07 接受日期:2021-08-17 出版日期:2022-02-22 发布日期:2022-02-14
  • 通讯作者: Xiaoyan Zhou, Hangjun Lu E-mail:zxylu@zjnu.cn;zjlhjun@zjnu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11875237).

Effect of an electric field on dewetting transition of nitrogen-water system

Qi Feng(冯琦), Jiaxian Li(厉嘉贤), Xiaoyan Zhou(周晓艳), and Hangjun Lu(陆杭军)   

  1. Department of Physics, Zhejiang Normal University, Jinhua 321004, China
  • Received:2021-07-10 Revised:2021-08-07 Accepted:2021-08-17 Online:2022-02-22 Published:2022-02-14
  • Contact: Xiaoyan Zhou, Hangjun Lu E-mail:zxylu@zjnu.cn;zjlhjun@zjnu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11875237).

摘要: We investigate the influence of an external electric field on the dewetting behavior of nitrogen-water systems between two hydrophobic plates using molecular dynamics simulations. It is found that the critical distance of dewetting increases obviously with the electric field strength, indicating that the effective range of hydrophobic attraction is extended. The mechanism behind this interesting phenomenon is related to the rearrangement of hydrogen bond networks between water molecules induced by the external electric field. Changes in the hydrogen bond networks and in the dipole orientation of the water molecules result in the redistribution of the neutral nitrogen molecules, especially in the region close to the hydrophobic plates. Our findings may be helpful for understanding the effects of the electric field on the long-range hydrophobic interactions.

关键词: dewetting transition, hydrophobic interactions, electric field

Abstract: We investigate the influence of an external electric field on the dewetting behavior of nitrogen-water systems between two hydrophobic plates using molecular dynamics simulations. It is found that the critical distance of dewetting increases obviously with the electric field strength, indicating that the effective range of hydrophobic attraction is extended. The mechanism behind this interesting phenomenon is related to the rearrangement of hydrogen bond networks between water molecules induced by the external electric field. Changes in the hydrogen bond networks and in the dipole orientation of the water molecules result in the redistribution of the neutral nitrogen molecules, especially in the region close to the hydrophobic plates. Our findings may be helpful for understanding the effects of the electric field on the long-range hydrophobic interactions.

Key words: dewetting transition, hydrophobic interactions, electric field

中图分类号:  (Liquid-vapor transitions)

  • 64.70.F-
68.03.Hj (Liquid surface structure: measurements and simulations) 68.03.-g (Gas-liquid and vacuum-liquid interfaces) 68.18.Jk (Phase transitions in liquid thin films)