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Weak phonon scattering effect of twin boundaries on thermal transmission.

ABSTRACT: To study the effect of twin boundaries on thermal transmission, thermal conductivities of twinned diamond with different twin thicknesses have been studied by NEMD simulation. Results indicate that twin boundaries show a weak phonon scattering effect on thermal transmission, which is only caused by the additional twin boundaries' thermal resistance. Moreover, according to phonon kinetic theory, this weak phonon scattering effect of twin boundaries is mainly caused by a slightly reduced average group velocity.

SUBMITTER: Dong H

PROVIDER: S-EPMC4731792 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Weak phonon scattering effect of twin boundaries on thermal transmission.

Dong Huicong H Xiao Jianwei J Melnik Roderick R Wen Bin B

Scientific reports 20160129

To study the effect of twin boundaries on thermal transmission, thermal conductivities of twinned diamond with different twin thicknesses have been studied by NEMD simulation. Results indicate that twin boundaries show a weak phonon scattering effect on thermal transmission, which is only caused by the additional twin boundaries' thermal resistance. Moreover, according to phonon kinetic theory, this weak phonon scattering effect of twin boundaries is mainly caused by a slightly reduced average g ...[more]

PMID: 26822675

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