Suppressed thermal conductivity of bilayer graphene with vacancy-initiated linkages
Data(s) |
04/01/2015
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Resumo |
Through larger-scale molecular dynamics simulations, we investigated the impacts from vacancy-initiated linkages on the thermal conductivity of bilayer graphene sheets (of size L × W = 24.5 nm × 3.7 nm). Three different interlayer linkages, including divacancy bridging, “spiro” interstitial bridging and Frenkel pair defects, are considered. It is found that the presence of interlayer linkages induces a significant degradation in the thermal conductivity of the bilayer graphene sheet. The degradation is strongly dependent on the interlayer linkage type, concentration and location. More importantly, the linkages that contain vacancies lead to more severe suppression of the thermal conductivity, in agreement with theoretical predictions that vacancies induce strong phonon scattering. Our finding provides useful guidelines for the application of multilayer graphene sheets in practical thermal management. |
Formato |
application/pdf |
Identificador | |
Publicador |
American Chemical Society |
Relação |
http://eprints.qut.edu.au/82300/2/accepted_version.pdf DOI:10.1021/jp5117905 Zhan, Haifei, Zhang, Yingyan, Bell, John M., & Gu, YuanTong (2015) Suppressed thermal conductivity of bilayer graphene with vacancy-initiated linkages. Journal of Physical Chemistry C, 119(4), pp. 1748-1752. http://purl.org/au-research/grants/ARC/DP130102120 |
Direitos |
Copyright 2015 American Chemical Society |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #091307 Numerical Modelling and Mechanical Characterisation #100712 Nanoscale Characterisation #interlayer linkages #thermal conductivity #bi-layer graphene sheet #phonon scattering #molecular dynamics simulations |
Tipo |
Journal Article |