中国物理B ›› 2021, Vol. 30 ›› Issue (10): 106804-106804.doi: 10.1088/1674-1056/ac192d

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Molecular simulation study of the adhesion work for water droplets on water monolayer at room temperature

Mengyang Qu(屈孟杨)1,2, Bo Zhou(周波)3,†, and Chunlei Wang(王春雷)1,4,‡   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China;
    4 Zhangjiang Laboratory, Interdisplinary Research Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • 收稿日期:2021-06-19 修回日期:2021-07-09 接受日期:2021-07-30 出版日期:2021-09-17 发布日期:2021-10-08
  • 通讯作者: Bo Zhou, Chunlei Wang E-mail:bozhou@zju.edu.cn;wangchunlei@zjlab.org.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12022508 and 12074394) and Sichuan Science and Technology Program (Grant No. 2017YJ0174).

Molecular simulation study of the adhesion work for water droplets on water monolayer at room temperature

Mengyang Qu(屈孟杨)1,2, Bo Zhou(周波)3,†, and Chunlei Wang(王春雷)1,4,‡   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China;
    4 Zhangjiang Laboratory, Interdisplinary Research Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • Received:2021-06-19 Revised:2021-07-09 Accepted:2021-07-30 Online:2021-09-17 Published:2021-10-08
  • Contact: Bo Zhou, Chunlei Wang E-mail:bozhou@zju.edu.cn;wangchunlei@zjlab.org.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12022508 and 12074394) and Sichuan Science and Technology Program (Grant No. 2017YJ0174).

摘要: The wetting phenomenon of water droplets coexisting with the ordered water monolayer termed an unexpected phenomenon of “water that does not wet a water monolayer” at room temperature has been found on several solid surfaces. Although the hydrogen bond saturation inside the monolayer can qualitatively describe this phenomenon, whether the Young-Dupré equation still holds under this unconventional wetting framework is still not answered. In this work, we have calculated the contact angle values of the droplets as well as the work of adhesion between the droplets and the monolayer based on an extended phantom-wall method. The results show that similar to the conventional solid-liquid interface, classical Young-Dupré equation is also applicable for the interface of liquid water and ordered water monolayer.

关键词: wetting, work of adhesion, contact angle, water

Abstract: The wetting phenomenon of water droplets coexisting with the ordered water monolayer termed an unexpected phenomenon of “water that does not wet a water monolayer” at room temperature has been found on several solid surfaces. Although the hydrogen bond saturation inside the monolayer can qualitatively describe this phenomenon, whether the Young-Dupré equation still holds under this unconventional wetting framework is still not answered. In this work, we have calculated the contact angle values of the droplets as well as the work of adhesion between the droplets and the monolayer based on an extended phantom-wall method. The results show that similar to the conventional solid-liquid interface, classical Young-Dupré equation is also applicable for the interface of liquid water and ordered water monolayer.

Key words: wetting, work of adhesion, contact angle, water

中图分类号:  (Wetting)

  • 68.08.Bc
68.35.Np (Adhesion) 68.08.-p (Liquid-solid interfaces) 68.05.Cf (Liquid-liquid interface structure: measurements and simulations)