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APS » Journals » Phys. Rev. Lett. » Volume 89 » Issue 6
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Phys. Rev. Lett. 89, 064503 (2002) [4 pages]

Single-File Transport of Water Molecules through a Carbon Nanotube

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Alexander Berezhkovskii*
Mathematical and Statistical Computing Laboratory, Center for Information Technology, National Institutes of Health, Bethesda, Maryland 20892

Gerhard Hummer
Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892

Received 4 April 2002; published 23 July 2002

Recent molecular dynamics simulations of water transport through the interior channel of a carbon nanotube in contact with an aqueous reservoir showed that conduction occurred in bursts with collective water motion. A continuous-time random-walk model is used to describe concerted transport through channels densely filled with molecules in a single-file arrangement, as also found in zeolites, as well as ion channels and aquaporins in biological membranes. Theoretical predictions for different collective properties of the single-file transport agree with the simulation results.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.064503
DOI:
10.1103/PhysRevLett.89.064503
PACS:
47.60.+i, 85.35.Kt, 87.16.Uv

*Permanent address: Karpov Institute of Physical Chemistry, Vorontsovo Pole 10, Moscow, K-64, 103064 Russia.

Email address:berezh@speck.niddk.nih.gov

 
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