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Enhanced Heat Sprea...
Enhanced Heat Spreader Based on Few-Layer Graphene Intercalated With Silane-Functionalization Molecules
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- han, Hao xue (author)
- Centre national de la recherche scientifique (CNRS),Ecole Centrale Paris
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- Kosevich, Y. A. (author)
- Russian Academy of Sciences,Centre national de la recherche scientifique (CNRS),Ecole Centrale Paris
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- Zhang, Yong, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Liu, Johan, 1960 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fu, Yifeng, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ye, Lilei, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Volz, S. (author)
- Centre national de la recherche scientifique (CNRS),Ecole Centrale Paris
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(creator_code:org_t)
- ISBN 9781479954155
- 2014
- 2014
- English.
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In: IEEE 20th International Workshop on Thermal Investigation of ICs and Systems (Therminic). Greenwich, London, United Kingdom, 24-26 September 2014. - 9781479954155 ; , s. 1-4
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
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- We studied the heat-spreading enhancement of supported few-layer graphene by inserting silane-functionalization molecules between graphene sheets. We calculated the overall thermal resistance of graphene-substrate interface and the in-plane thermal conductivity of graphene sheets by equilibrium molecular dynamics simulations. We probed the spectral phonon transmission coefficient by non-equilibrium Green's function to characterize the local heat conduction through the interface. Our results show that the overal thermal resistance between the substrate graphene and the upper two-layer graphene underwent a three-fold increase by the presence of the molecules, while the local heat conduction from the hot spot to the graphene sheets through the molecules was largely intensified. Furthermore, the in-plane thermal conductivity of the few-layer graphene increased by 60% compared with the supported graphene non-bonded to the substrate through the molecules. This increase is attributed to the refrained cross-plane phonon scattering which in turn reinforces the in-plane heat conduction of the few-layer graphene. In summary, we proved that by inserting silane-functionalization molecules, the few-layer graphene becomes an ideal candidate for heat spreading by guiding heat more efficiently away from the heat source.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Publication and Content Type
- kon (subject category)
- ref (subject category)
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- By the author/editor
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han, Hao xue
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Kosevich, Y. A.
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Zhang, Yong, 198 ...
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Liu, Johan, 1960
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Fu, Yifeng, 1984
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Ye, Lilei, 1970
-
show more...
-
Volz, S.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
- Articles in the publication
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IEEE 20th Intern ...
- By the university
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Chalmers University of Technology