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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

INTERFACIAL THERMAL RESISTANCE AT GRAPHENE-WATER INTERFACE

Get access (open in a dialog) DOI: 10.1615/IHTC16.nmt.022672
pages 7197-7207

要約

Graphene has attracted enormous attention due to its extraordinary physical properties, which has potential for thermal conductivity of composite materials or nanofluids. Therefore, the interfacial thermal resistance between graphene and the surrounding matrices arises as an important issue. In this paper, the interfacial thermal transport across graphene and water is investigated by the molecular dynamics simulations. The interfacial thermal resistance between graphene and water decreases with layer number. Based on the phonon power spectrum analyses, it is found that the low-frequency modes in graphene are easily coupled with water vibrations. The high-frequency modes must transfer to low-frequency modes through phonon scattering processes before exchanging energy with water .The thermal resistance across monolayer graphene and water is higher than that across multilayer graphene and water, because it is hard for the transfer due to the higher temperature of the high-frequency modes. Our findings are instructive for understanding the interfacial transport in graphene-based nanofluids.