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Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures

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Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures. / Pumarol Crestar, Manuel; Rosamond, Mark C.; Tovee, Peter et al.

In: Nano Letters, Vol. 12, No. 6, 06.2012, p. 2906-2911.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Pumarol Crestar M, Rosamond MC, Tovee P, Petty MC, Zeze DA, Falko V et al. Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures. Nano Letters. 2012 Jun;12(6):2906-2911. doi: 10.1021/nl3004946

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Bibtex

@article{9b9da38536ff4ef79db3a793c227e086,
title = "Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures",
abstract = "We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat is conducted by ballistic phonons, compared to adjacent areas of supported graphene, and observed decreasing thermal conductance of supported graphene with increased layer number. Our nanothermal images suggest a mean-free-path of thermal phonons in supported graphene below 100 nm.",
keywords = "Nanoscale thermal transport, nanoscale imaging, ballistic phonons , thermal conductivity , graphene , scanning thermal microscopy",
author = "{Pumarol Crestar}, Manuel and Rosamond, {Mark C.} and Peter Tovee and Petty, {Michael C.} and Zeze, {Dagou A.} and Vladimir Falko and Kolosov, {Oleg V.}",
year = "2012",
month = jun,
doi = "10.1021/nl3004946",
language = "English",
volume = "12",
pages = "2906--2911",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures

AU - Pumarol Crestar, Manuel

AU - Rosamond, Mark C.

AU - Tovee, Peter

AU - Petty, Michael C.

AU - Zeze, Dagou A.

AU - Falko, Vladimir

AU - Kolosov, Oleg V.

PY - 2012/6

Y1 - 2012/6

N2 - We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat is conducted by ballistic phonons, compared to adjacent areas of supported graphene, and observed decreasing thermal conductance of supported graphene with increased layer number. Our nanothermal images suggest a mean-free-path of thermal phonons in supported graphene below 100 nm.

AB - We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat is conducted by ballistic phonons, compared to adjacent areas of supported graphene, and observed decreasing thermal conductance of supported graphene with increased layer number. Our nanothermal images suggest a mean-free-path of thermal phonons in supported graphene below 100 nm.

KW - Nanoscale thermal transport

KW - nanoscale imaging

KW - ballistic phonons

KW - thermal conductivity

KW - graphene

KW - scanning thermal microscopy

UR - http://www.scopus.com/inward/record.url?scp=84862292641&partnerID=8YFLogxK

U2 - 10.1021/nl3004946

DO - 10.1021/nl3004946

M3 - Journal article

VL - 12

SP - 2906

EP - 2911

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 6

ER -