中国物理B ›› 2018, Vol. 27 ›› Issue (6): 60101-060101.doi: 10.1088/1674-1056/27/6/060101

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices •    下一篇

Enhancement of water self-diffusion at super-hydrophilic surface with ordered water

Xiao-Meng Yu(于晓萌), Chong-Hai Qi(齐崇海), Chun-Lei Wang(王春雷)   

  1. 1 Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 School of Physical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China;
    3 School of Physics, Shandong University, Jinan 250100, China
  • 收稿日期:2017-10-26 修回日期:2018-02-07 出版日期:2018-06-05 发布日期:2018-06-05
  • 通讯作者: Chun-Lei Wang E-mail:wangchunlei@sinap.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos.11290164,11674345,and U1532260),the Key Research Program of Chinese Academy of Sciences (Grant Nos.KJZD-EW-M03 and QYZDJ-SSW-SLH019),the Youth Innovation Promotion Association,Chinese Academy of Sciences,the Shanghai Supercomputer Center of China,the Computer Network Information Center of Chinese Academy of Sciences,and the Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase),China.

Enhancement of water self-diffusion at super-hydrophilic surface with ordered water

Xiao-Meng Yu(于晓萌)1,2, Chong-Hai Qi(齐崇海)3, Chun-Lei Wang(王春雷)1   

  1. 1 Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 School of Physical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China;
    3 School of Physics, Shandong University, Jinan 250100, China
  • Received:2017-10-26 Revised:2018-02-07 Online:2018-06-05 Published:2018-06-05
  • Contact: Chun-Lei Wang E-mail:wangchunlei@sinap.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos.11290164,11674345,and U1532260),the Key Research Program of Chinese Academy of Sciences (Grant Nos.KJZD-EW-M03 and QYZDJ-SSW-SLH019),the Youth Innovation Promotion Association,Chinese Academy of Sciences,the Shanghai Supercomputer Center of China,the Computer Network Information Center of Chinese Academy of Sciences,and the Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase),China.

摘要:

It has been well acknowledged that molecular water structures at the interface play an important role in the surface properties, such as wetting behavior or surface frictions. Using molecular dynamics simulation, we show that the water self-diffusion on the top of the first ordered water layer can be enhanced near a super-hydrophilic solid surface. This is attributed to the fewer number of hydrogen bonds between the first ordered water layer and water molecules above this layer, where the ordered water structures induce much slower relaxation behavior of water dipole and longer lifetime of hydrogen bonds formed within the first layer.

关键词: ordered water layer, self-diffusion, dipole correlation, hydrogen bond

Abstract:

It has been well acknowledged that molecular water structures at the interface play an important role in the surface properties, such as wetting behavior or surface frictions. Using molecular dynamics simulation, we show that the water self-diffusion on the top of the first ordered water layer can be enhanced near a super-hydrophilic solid surface. This is attributed to the fewer number of hydrogen bonds between the first ordered water layer and water molecules above this layer, where the ordered water structures induce much slower relaxation behavior of water dipole and longer lifetime of hydrogen bonds formed within the first layer.

Key words: ordered water layer, self-diffusion, dipole correlation, hydrogen bond

中图分类号:  (Physics literature and publications)

  • 01.30.-y
05.20.-y (Classical statistical mechanics) 05.70.Np (Interface and surface thermodynamics) 05.90.+m (Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems)