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Functionalization mediates heat transport in graphene nanoflakes

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Functionalization mediates heat transport in graphene nanoflakes. / Han, Haoxue; Zhang, Yong; Wang, Nan et al.
In: Nature Communications, Vol. 7, 11281, 29.04.2016.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Han, H, Zhang, Y, Wang, N, Samani, MK, Ni, Y, Mijbil, ZY, Edwards, M, Xiong, S, Sääskilahti, K, Murugesan, M, Fu, Y, Ye, L, Sadeghi, H, Bailey, S, Kosevich, YA, Lambert, CJ, Liu, J & Volz, S 2016, 'Functionalization mediates heat transport in graphene nanoflakes', Nature Communications, vol. 7, 11281. https://doi.org/10.1038/ncomms11281

APA

Han, H., Zhang, Y., Wang, N., Samani, M. K., Ni, Y., Mijbil, Z. Y., Edwards, M., Xiong, S., Sääskilahti, K., Murugesan, M., Fu, Y., Ye, L., Sadeghi, H., Bailey, S., Kosevich, Y. A., Lambert, C. J., Liu, J., & Volz, S. (2016). Functionalization mediates heat transport in graphene nanoflakes. Nature Communications, 7, Article 11281. https://doi.org/10.1038/ncomms11281

Vancouver

Han H, Zhang Y, Wang N, Samani MK, Ni Y, Mijbil ZY et al. Functionalization mediates heat transport in graphene nanoflakes. Nature Communications. 2016 Apr 29;7:11281. doi: 10.1038/ncomms11281

Author

Han, Haoxue ; Zhang, Yong ; Wang, Nan et al. / Functionalization mediates heat transport in graphene nanoflakes. In: Nature Communications. 2016 ; Vol. 7.

Bibtex

@article{1ce567f245a149b2aa57d3af8a9f73c4,
title = "Functionalization mediates heat transport in graphene nanoflakes",
abstract = "The high thermal conductivity of graphene and few-layer graphene undergoes severe degradations through contact with the substrate. Here we show experimentally that the thermal management of a micro heater is substantially improved by introducing alternative heat-escaping channels into a graphene-based film bonded to functionalized graphene oxide through amino-silane molecules. Using a resistance temperature probe for in situ monitoring we demonstrate that the hotspot temperature was lowered by ~28 °C for a chip operating at 1,300 W cm−2. Thermal resistance probed by pulsed photothermal reflectance measurements demonstrated an improved thermal coupling due to functionalization on the graphene–graphene oxide interface. Three functionalization molecules manifest distinct interfacial thermal transport behaviour, corroborating our atomistic calculations in unveiling the role of molecular chain length and functional groups. Molecular dynamics simulations reveal that the functionalization constrains the cross-plane phonon scattering, which in turn enhances in-plane heat conduction of the bonded graphene film by recovering the long flexural phonon lifetime.",
author = "Haoxue Han and Yong Zhang and Nan Wang and Samani, {Majid Kabiri} and Yuxiang Ni and Mijbil, {Zainelabideen Y.} and Michael Edwards and Shiyun Xiong and Kimmo S{\"a}{\"a}skilahti and Murali Murugesan and Yifeng Fu and Lilei Ye and Hatef Sadeghi and Steven Bailey and Kosevich, {Yuriy A.} and Lambert, {Colin J.} and Johan Liu and Sebastian Volz",
year = "2016",
month = apr,
day = "29",
doi = "10.1038/ncomms11281",
language = "English",
volume = "7",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Functionalization mediates heat transport in graphene nanoflakes

AU - Han, Haoxue

AU - Zhang, Yong

AU - Wang, Nan

AU - Samani, Majid Kabiri

AU - Ni, Yuxiang

AU - Mijbil, Zainelabideen Y.

AU - Edwards, Michael

AU - Xiong, Shiyun

AU - Sääskilahti, Kimmo

AU - Murugesan, Murali

AU - Fu, Yifeng

AU - Ye, Lilei

AU - Sadeghi, Hatef

AU - Bailey, Steven

AU - Kosevich, Yuriy A.

AU - Lambert, Colin J.

AU - Liu, Johan

AU - Volz, Sebastian

PY - 2016/4/29

Y1 - 2016/4/29

N2 - The high thermal conductivity of graphene and few-layer graphene undergoes severe degradations through contact with the substrate. Here we show experimentally that the thermal management of a micro heater is substantially improved by introducing alternative heat-escaping channels into a graphene-based film bonded to functionalized graphene oxide through amino-silane molecules. Using a resistance temperature probe for in situ monitoring we demonstrate that the hotspot temperature was lowered by ~28 °C for a chip operating at 1,300 W cm−2. Thermal resistance probed by pulsed photothermal reflectance measurements demonstrated an improved thermal coupling due to functionalization on the graphene–graphene oxide interface. Three functionalization molecules manifest distinct interfacial thermal transport behaviour, corroborating our atomistic calculations in unveiling the role of molecular chain length and functional groups. Molecular dynamics simulations reveal that the functionalization constrains the cross-plane phonon scattering, which in turn enhances in-plane heat conduction of the bonded graphene film by recovering the long flexural phonon lifetime.

AB - The high thermal conductivity of graphene and few-layer graphene undergoes severe degradations through contact with the substrate. Here we show experimentally that the thermal management of a micro heater is substantially improved by introducing alternative heat-escaping channels into a graphene-based film bonded to functionalized graphene oxide through amino-silane molecules. Using a resistance temperature probe for in situ monitoring we demonstrate that the hotspot temperature was lowered by ~28 °C for a chip operating at 1,300 W cm−2. Thermal resistance probed by pulsed photothermal reflectance measurements demonstrated an improved thermal coupling due to functionalization on the graphene–graphene oxide interface. Three functionalization molecules manifest distinct interfacial thermal transport behaviour, corroborating our atomistic calculations in unveiling the role of molecular chain length and functional groups. Molecular dynamics simulations reveal that the functionalization constrains the cross-plane phonon scattering, which in turn enhances in-plane heat conduction of the bonded graphene film by recovering the long flexural phonon lifetime.

U2 - 10.1038/ncomms11281

DO - 10.1038/ncomms11281

M3 - Journal article

VL - 7

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 11281

ER -