Size effects and the role of density on the viscosity of water confined in carbon nanotubes

作者：Kohler Mateus Henrique; da Silva Leandro Barros

来源：Chemical Physics Letters, 2016, 645: 38-41.

DOI：10.1016/j.cplett.2015.12.020

Equilibrium molecular dynamics simulations were carried out in order to determine the viscosity of water confined into carbon nanotubes. We have found that the viscosity of confined water is about an order of magnitude lower than bulk and increase non-linearly with nanotube diameter. We quantify the influence of density of water upon its viscosity, and observed a strong dependence between both quantities. After analysis of density profiles and diffusion coefficients we conclude that water at high density regime experiences a structural transition resulting in a large increment in viscosity.

• 出版日期2016-2