Infiltration behaviour of water in a carbon nanotube under external pressure

Guoxin CAO, Yu QIAO, Qulan ZHOU, Xi CHEN*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

41 Citations (Scopus)


The wetting behaviour and associated pressure effect of water in single-walled carbon nanotubes (SWCNTs) are investigated through molecular dynamics (MD) simulations. It is found that water molecules can enter SWCNTs via surface diffusion, and the effective infiltration rate increases with pressure. The effect of pressure on infiltration rate is highly non-linear, exhibiting characteristics of both hydrophilic and hydrophobic surfaces. There exists a nominal infiltration pressure that is dependent on the SWCNT size, above which the water flux is significantly increased.

Original languageEnglish
Pages (from-to)371-378
Number of pages8
JournalPhilosophical Magazine Letters
Issue number5
Publication statusPublished - May 2008
Externally publishedYes

Bibliographical note

The study was supported by The Army Research Office under Grant No. W911NF-05-1-0288 and by National Science Foundation CMMI-0643726.


  • Carbon nanotube
  • Simulation
  • Water infiltration


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