期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 108, 期 39, 页码 16170-16175出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1105189108
关键词
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资金
- US National Science Foundation [CBET-0853657]
- US Department of Energy [DE-SC0001902]
- Oklahoma Center for the Advancement of Science and Technology (OCAST) [HR08-154]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0853657] Funding Source: National Science Foundation
Understanding and predicting the behavior of water, especially in contact with various surfaces, is a scientific challenge. Molecular-level understanding of hydrophobic effects and their macroscopic consequences, in particular, is critical to many applications. Macroscopically, a surface is classified as hydrophilic or hydrophobic depending on the contact angle formed by a water droplet. Because hydrophobic surfaces tend to cause water slip whereas hydrophilic ones do not, the former surfaces can yield self-cleaning garments and ice-repellent materials whereas the latter cannot. The results presented herein suggest that this dichotomy might be purely coincidental. Our simulation results demonstrate that hydrophilic surfaces can show features typically associated with hydrophobicity, namely liquid water slip. Further analysis provides details on the molecular mechanism responsible for this surprising result.
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