  Molecular dynamics simulations are performed to investigate the water
permeation across the single-walled carbon nanotube (SWCNT) with the radial
breathing mode (RBM) vibration. It is found that the RBM can play a significant
role in breaking hydrogen bonds of the water chain, accordingly increasing the
net flux dramatically, and reducing drastically the average number of water
molecules inside the tube with the frequency ranging from 5000 to 11000 GHz,
while far away from this frequency region the transport properties of water
molecules are almost unaffected by the RBM. This phenomenon can be understood
as the resonant response of the water molecule chain to the RBM. Our findings
are expected to be helpful for the design of high-flux nanochannels and the
understanding of biological activities especially the water channelling.
