Functionalization mediates heat transport in graphene nanoflakes

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Han, Haoxue
dc.contributor.author Zhang, Yong
dc.contributor.author Wang, Nan
dc.contributor.author Samani, Majid Kabiri
dc.contributor.author Ni, Yuxiang
dc.contributor.author Mijbil, Zainelabideen Y.
dc.contributor.author Edwards, Michael
dc.contributor.author Xiong, Shiyun
dc.contributor.author Sääskilahti, Kimmo
dc.contributor.author Murugesan, Murali
dc.contributor.author Fu, Yifeng
dc.contributor.author Ye, Lilei
dc.contributor.author Sadeghi, Hatef
dc.contributor.author Bailey, Steven
dc.contributor.author Kosevich, Yuriy A.
dc.contributor.author Lambert, Colin J.
dc.contributor.author Liu, Johan
dc.contributor.author Volz, Sebastian
dc.date.accessioned 2017-01-19T11:14:24Z
dc.date.issued 2016-04-29
dc.identifier.citation 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 , vol 7 , 11281 . DOI: 10.1038/ncomms11281 en
dc.identifier.issn 2041-1723
dc.identifier.other PURE UUID: d09b16a2-d9f5-40c6-8eef-3ed6a76a9743
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/functionalization-mediates-heat-transport-in-graphene-nanoflakes(d09b16a2-d9f5-40c6-8eef-3ed6a76a9743).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=84964684037&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/9889349/ncomms11281.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/24341
dc.description.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. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries NATURE COMMUNICATIONS en
dc.relation.ispartofseries Volume 7 en
dc.rights openAccess en
dc.subject.other Biochemistry, Genetics and Molecular Biology(all) en
dc.subject.other Chemistry(all) en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other 1182 Biochemistry, cell and molecular biology en
dc.title Functionalization mediates heat transport in graphene nanoflakes en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Inria Université Paris-Saclay
dc.contributor.department Chalmers University of Technology
dc.contributor.department University of Minnesota
dc.contributor.department Al-Qasim Green University
dc.contributor.department Max Planck Institute for Polymer Research
dc.contributor.department Department of Neuroscience and Biomedical Engineering
dc.contributor.department SHT Smart High Tech AB
dc.contributor.department Lancaster University
dc.contributor.department RAS - N.N. Semenov Institute of Chemical Physics
dc.subject.keyword Biochemistry, Genetics and Molecular Biology(all)
dc.subject.keyword Chemistry(all)
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword 1182 Biochemistry, cell and molecular biology
dc.identifier.urn URN:NBN:fi:aalto-201701191286
dc.identifier.doi 10.1038/ncomms11281
dc.type.version publishedVersion


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