Modeling the influence of the external electric fields on water viscosity inside carbon nanotubes

M Farrokhbin and A Lohrasebi, EUROPEAN PHYSICAL JOURNAL E, 46, 93 (2023).

DOI: 10.1140/epje/s10189-023-00357-9

Equilibrium molecular dynamics simulations were performed to explore the effects of external electric fields and confinement on water properties inside various carbon nanotubes (CNTs). Using different GHz electric field frequencies as well as various constant electric field strengths, the radial distribution function and density profile were investigated, by which the impact of the electric fields and confinement on the water structure are revealed. The results indicated water molecules inside the CNT form layered structures due to topological confinement applying external electric fields can disturb this ordered water molecules structure and increase the viscosity of confined water, particularly in the case of CNTs with a radius less than 13.5 A. Conversely, for CNTs with a radius greater than13.5 A, the viscosity decreases under the influence of external oscillating or constant electric fields.Graphical abstractHow dose the synergism of confinement and external electric fields affect the water properties inside the CNTs?

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