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Phys. Rev. Lett. 103, 137801 (2009) [4 pages]

Stable Liquid Water Droplet on a Water Monolayer Formed at Room Temperature on Ionic Model Substrates

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Chunlei Wang1,2, Hangjun Lu1,2, Zhigang Wang1, Peng Xiu1, Bo Zhou1,2, Guanghong Zuo3, Rongzheng Wan1, Jun Hu1, and Haiping Fang1,3,4,*
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Post Office Box 800-204, Shanghai, 201800, China
2Graduate School of the Chinese Academy of Sciences, Beijing, 100080, China
3T-Life Research Center, Department of Physics, Fudan University, Shanghai 200433, China
4Theoretical Physics Center for Science Facilities (TPCSF), CAS, 19(B) Yuquan Road, Beijing 100049, China

Received 9 April 2009; published 25 September 2009

Using molecular dynamics simulation, we show direct evidence of the unexpected phenomenon of “water that does not wet a water monolayer” at room temperature. This phenomenon is attributed to the structure of the water beneath the water droplet, which exhibits an ordered water monolayer. Remarkably, there remains a considerable number of dangling OH bonds in this room temperature water monolayer, in contrast with the absence of dangling OH bonds at cryogenic temperature.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.137801
DOI:
10.1103/PhysRevLett.103.137801
PACS:
61.20.Ja, 61.30.Hn, 68.08.Bc

*fanghaiping@sinap.ac.cn

 
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