Controllable transport of water through nanochannel by rachet-like mechanism

Hangjun Lu, Xuechuan Nie, Fengmin Wu, Xiaoyan Zhou, Jianlong Kou, Yousheng Xu, Yang Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)


By using molecular dynamics simulation, we have investigated systematically the feasibility of continuous unidirectional water flux across a deformed single-walled carbon nanotube (SWNT) driven by an oscillating charge outside without osmotic pressure or hydrostatic drop. Simulation results indicate that the flux is dependent sensitively on the oscillating frequency of the charge, the distance of the charge from the SWNT, and the asymmetry of the water-SWNT system. A resonance-like phenomenon is found that the water flux is enhanced significantly when the period of the oscillation is close to twice the average hopping time of water molecules inside the SWNT. These findings are helpful in developing a novel design of efficient functional nanofluidic devices.
Original languageEnglish
Article number174511
JournalJournal of Chemical Physics
Issue number17
Publication statusPublished - 7 May 2012

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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