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 24.04.2010   Карта сайта     Language По-русски По-английски
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24.04.2010

Water transportation across narrow channel of nanometer dimension



Rongzheng Wana and Haiping FangCorresponding Author Contact Information, a, E-mail The Corresponding Author






a Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800, China





Received 27 December 2008; 


accepted 11 November 2009. 


by the Guest Editors. 


Available online 18 January 2010.







Abstract


Since the discovery of the carbon nanotube and aquaporin, the study of the transportation of water across nanochannels has become one of the hot subjects. When the radius of a nanochannel is only about one nanometer or a little larger, water confined in those nanoscale channels usually exhibits dynamics different from those in bulk system, such as the wet–dry transition due to the confinement, concerted hydrogen-bond orientations and flipping, concerted motion of water molecules, and strong interactions with external charges. Those dynamics correlate with the unique behavior of the water transportation across the channels, such as the extra-high permeability, excellent on–off gating behavior with response to the external mechanical and electrical signals and noises, enhancement by structure outside the channel, directional transportation driven by charges close to a channel or electric field. In this article, we review some of the recent progress on the study of the water molecules inside those narrow nanochannels.






Keywords: A. Nanochannel; A. Single-file water; E. Molecule dynamics simulations





Article Outline



1. Introduction
2. Properties of water molecules inside very narrow nanochannels so that water molecules are single filed: Phase transition due to confinement and proton transportation along the single-file water
3. Gating of the water permeation across the channel

3.1. Mechanical gating
3.2. Electrical gating

4. Water flow driven by electronic fields
5. Some factors on the enhancement and reduction of water permeation
6. Conclusions and discussions
Acknowledgements
References













Solid State Communications
Volume 150, Issues 21-22, June 2010, Pages 968-975
Nanoscale Interfacial Phenomena in Complex Fluids














 


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