![]() Holian, 1985, The Nose-Hoover Thermostat, J. Granick, 2001, Relaxation time of confined aqueous films under shear, Phys. Torres, 2008, Viscosity of liquid water via equilibrium molecular dynamics simulations, Front. Rusling, 2009, Targeted killing of cancer cells in vivo and in vitro with EGF-directed carbon nanotube-based drug delivery, ACS Nano 3, 307–316.ĭelgado-Barrio, G., R. 105, 9396–9409.īereadsea, H.J.C., 1987, The Missing Term In Effectlve Pair Potentlals, J. Sathian, 2011, The role of activation energy and reduced viscosity on the enhancement of water flow through carbon nanotubes, J. Koumoutsakos, 2013, Data driven, predictive molecular dynamics for nanoscale flow simulations under uncertainty, J. Tildesley, 1987, Computer Simulation of Liquids, Oxford University Press.Īngelikopoulos, P., C. Nguyen, 2008, Nanofluidic devices and their applications, Anal. Such unfamiliar behavior of viscosity and, consequently, the flow resistance, friction coefficient and slip length should be taken into account in investigation and design of such nanoconfined water.Ībgrall, P. Results show that five minima and four maxima values for the viscosity are observed for channels width less than 18.5 Å. According to the previous studies, the shear viscosity is greatly enhanced for subnanometer capillaries so that the shear viscosity increases dramatically by decreasing the channel size however, we found that shear viscosity obeys an oscillatory behavior and has a complicated behavior which originates from the consistency between the channel size and the space required to embed one layer of water molecules. ![]() This causes the anomalous behavior of water viscosity and therefore, the flow resistance of nanoconfined water. We show that if the capillary size becomes less than 18.5 Å, the sub-Angstrom variations significantly affect the layered structure of the confined water. ![]() Simulation results demonstrate that water molecules confined in the slits are layered and for channels width less than 21 Å, the number of layers varies from one to six. This study aims to investigate the effect of sub-Angstrom variations of nanochannel size on the shear viscosity of water confined in a silicon wall by employing equilibrium molecular dynamics (EMD) simulations. Shear viscosity is one of the important transport properties which affects different phenomena in nanoconfined water. ![]()
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