Fast water flow through graphene nanocapillaries: A continuum model approach involving the microscopic structure of confined water

null M. Neek-Amal; A.  Lohrasebi; M. Mousaei; F. Shayeganfar; Radha Boya; F. M. Peeters

doi:10.1063/1.5037992

Fast water flow through graphene nanocapillaries: A continuum model approach involving the microscopic structure of confined water

M. Neek-Amal, A. Lohrasebi, M. Mousaei, F. Shayeganfar, Radha Boya, F. M. Peeters

Research output: Contribution to journal › Article › peer-review

Abstract

Water inside a nanocapillary becomes ordered, resulting in unconventional behavior. A profound enhancement of water flow inside nanometer thin capillaries made of graphene has been observed [Radha et al., Nature (London) 538, 222 (2016)]. Here, we explain this enhancement as due to the large density and the extraordinary viscosity of water inside the graphene nanocapillaries. Using the Hagen-Poiseuille theory with slippage-boundary condition and incorporating disjoining pressure term in combination with results from molecular dynamics simulations, we present an analytical theory that elucidates the origin of the enhancement of water flow inside hydrophobic nanocapillaries. Our work reveals a distinctive dependence of water flow in a nanocapillary on the structural properties of nanoconfined water in agreement with experiment, which opens a new avenue in nanofluidics.

Original language	English
Article number	10.1063/1.5037992
Pages (from-to)	083101
Number of pages	5
Journal	Applied Physics Letters
Volume	113
DOIs	https://doi.org/10.1063/1.5037992
Publication status	Published - 20 Aug 2018

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National Graphene Institute

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10.1063/1.5037992

https://arxiv.org/abs/1808.06672

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title = "Fast water flow through graphene nanocapillaries: A continuum model approach involving the microscopic structure of confined water",

abstract = "Water inside a nanocapillary becomes ordered, resulting in unconventional behavior. A profound enhancement of water flow inside nanometer thin capillaries made of graphene has been observed [Radha et al., Nature (London) 538, 222 (2016)]. Here, we explain this enhancement as due to the large density and the extraordinary viscosity of water inside the graphene nanocapillaries. Using the Hagen-Poiseuille theory with slippage-boundary condition and incorporating disjoining pressure term in combination with results from molecular dynamics simulations, we present an analytical theory that elucidates the origin of the enhancement of water flow inside hydrophobic nanocapillaries. Our work reveals a distinctive dependence of water flow in a nanocapillary on the structural properties of nanoconfined water in agreement with experiment, which opens a new avenue in nanofluidics.",

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T1 - Fast water flow through graphene nanocapillaries: A continuum model approach involving the microscopic structure of confined water

AU - M. Neek-Amal, null

AU - Lohrasebi, A.

AU - Mousaei, M.

AU - Shayeganfar, F.

AU - Boya, Radha

AU - Peeters, F. M.

PY - 2018/8/20

Y1 - 2018/8/20

N2 - Water inside a nanocapillary becomes ordered, resulting in unconventional behavior. A profound enhancement of water flow inside nanometer thin capillaries made of graphene has been observed [Radha et al., Nature (London) 538, 222 (2016)]. Here, we explain this enhancement as due to the large density and the extraordinary viscosity of water inside the graphene nanocapillaries. Using the Hagen-Poiseuille theory with slippage-boundary condition and incorporating disjoining pressure term in combination with results from molecular dynamics simulations, we present an analytical theory that elucidates the origin of the enhancement of water flow inside hydrophobic nanocapillaries. Our work reveals a distinctive dependence of water flow in a nanocapillary on the structural properties of nanoconfined water in agreement with experiment, which opens a new avenue in nanofluidics.

AB - Water inside a nanocapillary becomes ordered, resulting in unconventional behavior. A profound enhancement of water flow inside nanometer thin capillaries made of graphene has been observed [Radha et al., Nature (London) 538, 222 (2016)]. Here, we explain this enhancement as due to the large density and the extraordinary viscosity of water inside the graphene nanocapillaries. Using the Hagen-Poiseuille theory with slippage-boundary condition and incorporating disjoining pressure term in combination with results from molecular dynamics simulations, we present an analytical theory that elucidates the origin of the enhancement of water flow inside hydrophobic nanocapillaries. Our work reveals a distinctive dependence of water flow in a nanocapillary on the structural properties of nanoconfined water in agreement with experiment, which opens a new avenue in nanofluidics.

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DO - 10.1063/1.5037992

M3 - Article

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JO - Applied Physics Letters

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M1 - 10.1063/1.5037992

ER -

Fast water flow through graphene nanocapillaries: A continuum model approach involving the microscopic structure of confined water

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