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The contact area dependent interfacial thermal conductance

Authors :
Chenhan Liu
Zhiyong Wei
Jian Wang
Kedong Bi
Juekuan Yang
Yunfei Chen
Source :
AIP Advances, Vol 5, Iss 12, Pp 127111-127111-9 (2015)
Publication Year :
2015
Publisher :
AIP Publishing LLC, 2015.

Abstract

The effects of the contact area on the interfacial thermal conductance σ are investigated using the atomic Green’s function method. Different from the prediction of the heat diffusion transport model, we obtain an interesting result that the interfacial thermal conductance per unit area Λ is positively dependent on the contact area as the area varies from a few atoms to several square nanometers. Through calculating the phonon transmission function, it is uncovered that the phonon transmission per unit area increases with the increased contact area. This is attributed to that each atom has more neighboring atoms in the counterpart of the interface with the increased contact area, which provides more channels for phonon transport.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
5
Issue :
12
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.9de474e3fee24b2798c33f675a8fe3a5
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4937775