Width dependent intrinsic thermal conductivity of suspended monolayer graphene

Haidong Wang, Kosaku Kurata, Takanobu Fukunaga, Xing Zhang, Hiroshi Takamatsu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Size dependence is one of the most important unique features of thermal conductivity in two-dimensional materials. Suspended single-layer graphene (SLG) provides a perfect platform for studying the size dependent phonon transport. Here we report measurement and theoretical analysis of heat conduction in suspended SLG as a function of width and temperature. The thermal conductivity of graphene was larger for wider SLG. This width effect was smaller at higher temperatures. In suspended SLG, the long wave-length phonons tend to be more scattered at the lateral boundaries of narrow SLG ribbon, in which the mean free path of phonons is close to the sample width. This behavior can be understood as a mode selectivity of phonon-boundary scattering for suspended SLG. The result revealed the unique width dependence of thermal conductivity in suspended SLG and provided useful guidelines for the future SLG-based thermal applications.

Original languageEnglish
Pages (from-to)76-80
Number of pages5
JournalInternational Journal of Heat and Mass Transfer
Volume105
DOIs
Publication statusPublished - Feb 1 2017

Fingerprint

Graphite
Graphene
Monolayers
Thermal conductivity
graphene
thermal conductivity
Phonons
phonons
planetary waves
Heat conduction
conductive heat transfer
mean free path
ribbons
platforms
selectivity
Scattering
Wavelength
Temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Width dependent intrinsic thermal conductivity of suspended monolayer graphene. / Wang, Haidong; Kurata, Kosaku; Fukunaga, Takanobu; Zhang, Xing; Takamatsu, Hiroshi.

In: International Journal of Heat and Mass Transfer, Vol. 105, 01.02.2017, p. 76-80.

Research output: Contribution to journalArticle

@article{17fd077bfd3b41aeb9003667f00f6762,
title = "Width dependent intrinsic thermal conductivity of suspended monolayer graphene",
abstract = "Size dependence is one of the most important unique features of thermal conductivity in two-dimensional materials. Suspended single-layer graphene (SLG) provides a perfect platform for studying the size dependent phonon transport. Here we report measurement and theoretical analysis of heat conduction in suspended SLG as a function of width and temperature. The thermal conductivity of graphene was larger for wider SLG. This width effect was smaller at higher temperatures. In suspended SLG, the long wave-length phonons tend to be more scattered at the lateral boundaries of narrow SLG ribbon, in which the mean free path of phonons is close to the sample width. This behavior can be understood as a mode selectivity of phonon-boundary scattering for suspended SLG. The result revealed the unique width dependence of thermal conductivity in suspended SLG and provided useful guidelines for the future SLG-based thermal applications.",
author = "Haidong Wang and Kosaku Kurata and Takanobu Fukunaga and Xing Zhang and Hiroshi Takamatsu",
year = "2017",
month = "2",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2016.09.054",
language = "English",
volume = "105",
pages = "76--80",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Width dependent intrinsic thermal conductivity of suspended monolayer graphene

AU - Wang, Haidong

AU - Kurata, Kosaku

AU - Fukunaga, Takanobu

AU - Zhang, Xing

AU - Takamatsu, Hiroshi

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Size dependence is one of the most important unique features of thermal conductivity in two-dimensional materials. Suspended single-layer graphene (SLG) provides a perfect platform for studying the size dependent phonon transport. Here we report measurement and theoretical analysis of heat conduction in suspended SLG as a function of width and temperature. The thermal conductivity of graphene was larger for wider SLG. This width effect was smaller at higher temperatures. In suspended SLG, the long wave-length phonons tend to be more scattered at the lateral boundaries of narrow SLG ribbon, in which the mean free path of phonons is close to the sample width. This behavior can be understood as a mode selectivity of phonon-boundary scattering for suspended SLG. The result revealed the unique width dependence of thermal conductivity in suspended SLG and provided useful guidelines for the future SLG-based thermal applications.

AB - Size dependence is one of the most important unique features of thermal conductivity in two-dimensional materials. Suspended single-layer graphene (SLG) provides a perfect platform for studying the size dependent phonon transport. Here we report measurement and theoretical analysis of heat conduction in suspended SLG as a function of width and temperature. The thermal conductivity of graphene was larger for wider SLG. This width effect was smaller at higher temperatures. In suspended SLG, the long wave-length phonons tend to be more scattered at the lateral boundaries of narrow SLG ribbon, in which the mean free path of phonons is close to the sample width. This behavior can be understood as a mode selectivity of phonon-boundary scattering for suspended SLG. The result revealed the unique width dependence of thermal conductivity in suspended SLG and provided useful guidelines for the future SLG-based thermal applications.

UR - http://www.scopus.com/inward/record.url?scp=84988557273&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988557273&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2016.09.054

DO - 10.1016/j.ijheatmasstransfer.2016.09.054

M3 - Article

VL - 105

SP - 76

EP - 80

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -