Kapitza Resistance between Few-Layer Graphene and Water: Liquid Layering Effects.
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 block thickness. 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-liquid interfaces by controlling and regulating the liquid layering at the interface.
Computational Science and Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich , CH-8092 Zurich, Switzerland.
Dmitry
D
Alexeev
Computational Science and Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich , CH-8092 Zurich, Switzerland.
Jie
J
Chen
Computational Science and Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich , CH-8092 Zurich, Switzerland.|Department of Mechanical Engineering, Technical University of Denmark , DK-2800 Kgs. Lyngby, Denmark.
Jens H
JH
Walther
Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States.
Konstantinos P
KP
Giapis
Computational Science and Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich , CH-8092 Zurich, Switzerland.
Panagiotis
P
Angelikopoulos
Computational Science and Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich , CH-8092 Zurich, Switzerland.
Petros
P
Koumoutsakos
Kapitza resistance; Liquid layering; few-layer graphene; molecular dynamics simulation; solid−liquid interface