Kapitza Resistance between Few-Layer Graphene and Water: Liquid Layering Effects

Dmitry Alexeev; Jie Chen; Jens Honore Walther; Konstantinos P. Giapis; Panagiotis Angelikopoulos; Petros Koumoutsakos

doi:10.1021/acs.nanolett.5b03024

Kapitza Resistance between Few-Layer Graphene and Water: Liquid Layering Effects

Dmitry Alexeev
, Jie Chen
, Jens Honore Walther
, Konstantinos P. Giapis
, Panagiotis Angelikopoulos
, Petros Koumoutsakos

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The Kapitza resistance (R_K) between few-layer graphene (FLG) and water was studied using molecular dynamics simulations. The RK was found to depend on the number of the layers in the FLG though, surprisingly, not on the water blockthickness. This distinct size dependence is attributed to the large difference in the phonon mean free path between the FLG and water. Remarkably, R_K is strongly dependent on the layering of water adjacent to the FLG, exhibiting an inverse proportionality relationship to the peak density of the first water layer, which is consistent with better acoustic phonon matching between FLG and water. These findings suggest novel ways to engineer the thermal transport properties of solid−liquidinterfaces by controlling and regulating the liquid layering at the interface.

Original language	English
Journal	Nano Letters
Volume	15
Issue number	9
Pages (from-to)	5744-5749
ISSN	1530-6984
DOIs	https://doi.org/10.1021/acs.nanolett.5b03024
Publication status	Published - 2015

Keywords

Liquid layering
Solid−liquid interface
Kapitza resistance
Few-layer graphene
Molecular dynamics simulation

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10.1021/acs.nanolett.5b03024

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title = "Kapitza Resistance between Few-Layer Graphene and Water: Liquid Layering Effects",

abstract = "The Kapitza resistance (RK) between few-layer graphene (FLG) and water was studied using molecular dynamics simulations. The RK was found to depend on the number of the layers in the FLG though, surprisingly, not on the water blockthickness. This distinct size dependence is attributed to the large difference in the phonon mean free path between the FLG and water. Remarkably, RK is strongly dependent on the layering of water adjacent to the FLG, exhibiting an inverse proportionality relationship to the peak density of the first water layer, which is consistent with better acoustic phonon matching between FLG and water. These findings suggest novel ways to engineer the thermal transport properties of solid−liquidinterfaces by controlling and regulating the liquid layering at the interface.",

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author = "Dmitry Alexeev and Jie Chen and Walther, \{Jens Honore\} and Giapis, \{Konstantinos P.\} and Panagiotis Angelikopoulos and Petros Koumoutsakos",

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AU - Alexeev, Dmitry

AU - Chen, Jie

AU - Walther, Jens Honore

AU - Giapis, Konstantinos P.

AU - Angelikopoulos, Panagiotis

AU - Koumoutsakos, Petros

PY - 2015

Y1 - 2015

N2 - The Kapitza resistance (RK) between few-layer graphene (FLG) and water was studied using molecular dynamics simulations. The RK was found to depend on the number of the layers in the FLG though, surprisingly, not on the water blockthickness. This distinct size dependence is attributed to the large difference in the phonon mean free path between the FLG and water. Remarkably, RK is strongly dependent on the layering of water adjacent to the FLG, exhibiting an inverse proportionality relationship to the peak density of the first water layer, which is consistent with better acoustic phonon matching between FLG and water. These findings suggest novel ways to engineer the thermal transport properties of solid−liquidinterfaces by controlling and regulating the liquid layering at the interface.

AB - The Kapitza resistance (RK) between few-layer graphene (FLG) and water was studied using molecular dynamics simulations. The RK was found to depend on the number of the layers in the FLG though, surprisingly, not on the water blockthickness. This distinct size dependence is attributed to the large difference in the phonon mean free path between the FLG and water. Remarkably, RK is strongly dependent on the layering of water adjacent to the FLG, exhibiting an inverse proportionality relationship to the peak density of the first water layer, which is consistent with better acoustic phonon matching between FLG and water. These findings suggest novel ways to engineer the thermal transport properties of solid−liquidinterfaces by controlling and regulating the liquid layering at the interface.

KW - Liquid layering

KW - Solid−liquid interface

KW - Kapitza resistance

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KW - Molecular dynamics simulation

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Kapitza Resistance between Few-Layer Graphene and Water: Liquid Layering Effects

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