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

被引：49
|
作者：
Kohler, Mateus Henrique [1 ,2 ]
da Silva, Leandro Barros [1 ]
机构：
[1] Univ Fed Santa Maria, Dept Fis, Av Roraima 1000, BR-97119900 Santa Maria, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
来源：
CHEMICAL PHYSICS LETTERS | 2016年 / 645卷
关键词：
MOLECULAR-DYNAMICS; TRANSPORT; TEMPERATURE; DIFFUSION; DEPENDENCE; MEMBRANES;
D O I：
10.1016/j.cplett.2015.12.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：38 / 41
页数：4
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