Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106512
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Cui, L | en_US |
dc.creator | Shi, S | en_US |
dc.creator | Wei, G | en_US |
dc.creator | Du, X | en_US |
dc.date.accessioned | 2024-05-09T00:53:58Z | - |
dc.date.available | 2024-05-09T00:53:58Z | - |
dc.identifier.issn | 1463-9076 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106512 | - |
dc.language.iso | en | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.rights | This journal is © the Owner Societies 2018 | en_US |
dc.rights | This is the accepted manuscript of the following article: Cui, L., Shi, S., Wei, G., & Du, X. (2018). Shear deformation-induced anisotropic thermal conductivity of graphene. Physical Chemistry Chemical Physics, 20(2), 951-957, which has been published in final form at https://doi.org/10.1039/C7CP06415B. | en_US |
dc.title | Shear deformation-induced anisotropic thermal conductivity of graphene | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 951 | en_US |
dc.identifier.epage | 957 | en_US |
dc.identifier.volume | 20 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.doi | 10.1039/c7cp06415b | en_US |
dcterms.abstract | Graphene-based materials exhibit intriguing phononic and thermal properties. In this paper, we have investigated the heat conductance in graphene sheets under shear-strain-induced wrinkling deformation, using equilibrium molecular dynamics simulations. A significant orientation dependence of the thermal conductivity of graphene wrinkles (GWs) is observed. The directional dependence of the thermal conductivity of GWs stems from the anisotropy of phonon group velocities as revealed by the G-band broadening of the phonon density of states (DOS), the anisotropy of thermal resistance as evidenced by the G-band peak mismatch of the phonon DOS, and the anisotropy of phonon relaxation times as a direct result of the double-exponential-fitting of the heat current autocorrelation function. By analyzing the relative contributions of different lattice vibrations to the heat flux, we have shown that the contributions of different lattice vibrations to the heat flux of GWs are sensitive to the heat flux direction, which further indicates the orientation-dependent thermal conductivity of GWs. Moreover, we have found that, in the strain range of 0–0.1, the anisotropy ratio of GWs increases monotonously with increasing shear strain. This is induced by the change in the number of wrinkles, which is more influential in the direction perpendicular to the wrinkle texture. The findings elucidated here emphasize the utility of wrinkle engineering for manipulation of nanoscale heat transport, which offers opportunities for the development of thermal channeling devices. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Physical chemistry chemical physics, 14 Jan. 2018, v. 20, no. 2, p. 951-957 | en_US |
dcterms.isPartOf | Physical chemistry chemical physics | en_US |
dcterms.issued | 2018-01-14 | - |
dc.identifier.scopus | 2-s2.0-85040192059 | - |
dc.identifier.pmid | 29231938 | - |
dc.identifier.eissn | 1463-9084 | en_US |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0733 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | the Hong Kong Scholars Program; China Postdoctoral Science Foundation Funded Project; National Natural Science Foundation of China; Fundamental Research Funds for the Central Universities | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 6811288 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Cui_Shear_Deformation-Induced_Anisotropic.pdf | Pre-Published version | 1.67 MB | Adobe PDF | View/Open |
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