Journal
THEORETICAL AND APPLIED MECHANICS LETTERS
Volume 3, Issue 3, Pages -Publisher
ELSEVIER
DOI: 10.1063/2.1303208
Keywords
nano fluid; molecular dynamics; hydrophilic nanotube; transport
Categories
Funding
- National Natural Science Foundation of China [11005093, 10932010, 11072220, 11072229, U1262109, 51176172, 10972208]
- Zhejiang Provincial Natural Science [Z6090556, Y6100384]
- Project of Educational Department of Zhejiang Province [Y200909221]
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The dynamics of fluid flow through nanochannels is different from those in macroscopic systems. By using the molecular dynamics simulations, we investigate the influence of surface polarity of nanotube on the transport properties of the water fluid. The nanotube used here resembles the carbon nanotube, but carries charges of q on some atoms; overall, the nanotube is charge-neutral. Our simulation results show that water flux decreases sharply with the increasing of q for q < 1.6 e; however, the water flux for shells far away from nanotube wall increases slightly when q > 1.6 e. The mechanism behind the interesting phenomenon is discussed. Our findings may have implications for development of nano-fluidic devices and for understanding the movement of confined fluid inside the hydrophilic nanochannel. (C) 2013 The Chinese Society of Theoretical and Applied Mechanics.
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