Single-file transport of water molecules through a carbon nanotube.
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.
Mathematical and Statistical Computing Laboratory, Center for Information Technology, National Institutes of Health, Bethesda, Maryland 20892, USA. berezh@speck.niddk.nih.gov
Alexander
A
Berezhkovskii
Gerhard
G
Hummer
D001692:Biological Transport; D002244:Carbon / Q000737:chemistry / Q000378:metabolism; D002462:Cell Membrane / Q000737:chemistry / Q000378:metabolism; D007473:Ion Channels / Q000737:chemistry / Q000378:metabolism; D008954:Models, Biological; D008956:Models, Chemical; D008962:Models, Theoretical; D036103:Nanotechnology; D014867:Water / Q000737:chemistry / Q000378:metabolism
D007473:Ion Channels; D014867:Water; D002244:Carbon