Temperature dependence of fluid transport in nanopores

BX Xu and BL Wang and T Park and Y Qiao and QL Zhou and X Chen, JOURNAL OF CHEMICAL PHYSICS, 136, 184701 (2012).

DOI: 10.1063/1.4712034

Understanding the temperature-dependent nanofluidic transport behavior is critical for developing thermomechanical nanodevices. By using non- equilibrium molecular dynamics simulations, the thermally responsive transport resistance of liquids in model carbon nanotubes is explored as a function of the nanopore size, the transport rate, and the liquid properties. Both the effective shear stress and the nominal viscosity decrease with the increase of temperature, and the temperature effect is coupled with other non-thermal factors. The molecular-level mechanisms are revealed through the study of the radial density profile and hydrogen bonding of confined liquid molecules. The findings are verified qualitatively with an experiment on nanoporous carbon. (C) 2012 American Institute of Physics. http://dx.doi.org/10.1063/1.4712034

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