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We use molecular dynamics simulations to study the diffusion of water inside deformed carbon nanotubes, with different degrees of eccentricity at 300K. We found a water structural transition between tubular-like to single-file for the (7,7)…

We use molecular dynamics simulations to study the diffusion of water inside deformed carbon nanotubes with different degrees of deformation at 300 K. We found that the number of hydrogen bonds that water forms depends on nanotube topology,…

软凝聚态物质 · 物理学 2020-01-16 Bruno H. S. Mendonça , Patricia Ternes , Evy Salcedo , Alan B. de Oliveira , Marcia C. Barbosa

In this article we investigate through molecular dynamics simulations the diffusion behavior of the TIP4P/2005 water when confined in pristine and deformed carbon nanotubes (armchair and zigzag). To analyze different diffusive mechanisms,…

软凝聚态物质 · 物理学 2021-02-03 Bruno H. S. Mendonça , Patricia Ternes , Evy Salcedo , Alan B. de Oliveira , Marcia C. Barbosa

In this study, using nonequilibrium molecular dynamics simulation, the water flow in carbon nanocones is studied using the TIP4P/2005 rigid water model. The results demonstrate a nonuniform dependence of the flow on the cone apex angle and…

We compared the diffusion of water confined in armchair and zigzag carbon nanotubes for rigid and flexible water models. Using one rigid model, TIP4P/2005, and two flexible models, SPC/Fw and SPC/FH, we found that the number of the number…

We report the results of a model calculation for studying the effects of hydrostatic pressure on a bunch of carbon nanotubes. At pressures that we work with, the deformation in axial direction comes out to be negligibly small. We find that…

材料科学 · 物理学 2007-05-23 Shuchi Gupta , Keya Dharamvir , V. K. Jindal

We have investigated the diffusion and structure of TIP4P/2005 water confined in carbon nanotubes subjected to external electric fields. A wide range of diameters has been used to show a highly size-dependent behavior of the water…

In this work the conduction of ion-water solution through two discrete bundles of armchair carbon and silicon carbide nanotubes, as useful membranes for water desalination, is studied. In order that studies on different types of nanotubes…

原子与分子团簇 · 物理学 2017-08-17 Mara Cantoni , Edovardo Imalini

A simple model for the friction experienced by the one dimensional water chains that flow through subnanometer diameter carbon nanotubes is studied. The model is based on a lowest order perturbation theory treatment of the friction…

流体动力学 · 物理学 2023-05-17 J. B. Sokoloff , A. W. C. Lau

The aim of the paper is the study of fluid mixtures in nanotubes by the methods of continuum mechanics. The model starts from a statistical distribution in mean-field molecular theory and uses a density expansion of Taylor series. We get a…

流体动力学 · 物理学 2018-08-01 Henri Gouin , Augusto Muracchini , Tommaso Ruggeri

In the last decades a large effort has been devoted to the study of water confined in hydrophobic geometries at the nanoscale (tubes, slit pores), because of the multiple technological applications of such systems, ranging from drugs…

软凝聚态物质 · 物理学 2019-12-23 A Zaragoza , MA Gonzalez , L Joly , I Lopez-Montero , MA Canales , AL Benavides , C Valeriani

The flow of water in carbon nanochannels has defied understanding thus far, with accumulating experimental evidence for ultra-low friction, exceptionally high water flow rates, and curvature-dependent hydrodynamic slippage. These unique…

介观与纳米尺度物理 · 物理学 2022-02-08 Nikita Kavokine , Marie-Laure Bocquet , Lydéric Bocquet

We explore by molecular dynamic simulations the thermodynamical behavior of an anomalous fluid confined inside rigid and flexible nanopores. The fluid is modeled by a two length scale potential. In the bulk this system exhibits the density…

软凝聚态物质 · 物理学 2014-02-05 Jose Rafael Bordin , Leandro B. Krott , Marcia C. Barbosa

We perform ab initio density functional calculations to study the flow of water, methanol and dimethyl ether through nanotubes of carbon and boron nitride with different diameters and chiralities. The liquids we choose are important…

材料科学 · 物理学 2021-07-01 Andrii Kyrylchuk , David Tománek

We investigate through non-equilibrium molecular dynamic simulations the flow of core-softened fluids inside nanotubes. Our results reveal a anomalous increase of the overall mass flux for nanotubes with sufficiently smaller radii. This is…

软凝聚态物质 · 物理学 2015-06-16 J. R. Bordin , J. S. Soares , A. Diehl , M. C. Barbosa

Experimental measurements have reported ultra-fast and radius-dependent water transport in carbon nanotubes which are absent in boron nitride nanotubes. Despite considerable effort, the origin of this contrasting (and fascinating) behaviour…

A problem on propagation of waves in deformable shells with flowing liquid is very urgent in connection with wide use of liquid transportation systems in living organisms and technology. It is necessary to consider shell motion equations…

数学物理 · 物理学 2009-06-18 V. Yu. Babanly

Experiments and computer simulations demonstrate that water spontaneously fills the hydrophobic cavity of a carbon nanotube. To gain a quantitative thermody- namic understanding of this phenomenon, we use the recently developed Two Phase…

介观与纳米尺度物理 · 物理学 2011-08-22 Hemant Kumar , Biswaroop Mukherjee , Shiang-Tai Lin Chandan Dasgupta , A. K. Sood , Prabal K. Maiti

New experimental results, and a plausible theoretical understanding thereof, are presented for the flow-induced currents and voltages observed in single-walled carbon nanotube samples. In our experiments, the electrical response was found…

其他凝聚态物理 · 物理学 2009-11-10 S. Ghosh , A. K. Sood , S. Ramaswamy , N. Kumar

Extensive molecular dynamics simulations of water permeation and ion selectivity of the single-walled carbon nanotubes with the radial deformation are presented . The simulated results indicate that there is a close relationship between the…

介观与纳米尺度物理 · 物理学 2012-03-01 Xu Kui , Wang Qing-Song , Tan Bin , Chen Ming-Xuan , Miao Ling , Jiang Jian-Jun
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