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We report on the first measurement of the thermal conductivity of a suspended single layer graphene. The measurements were performed using a non-contact optical technique. The near room-temperature values of the thermal conductivity in the…

Materials Science · Physics 2008-03-15 A. A. Balandin , S. Ghosh , W. Bao , I. Calizo , D. Teweldebrhan , F. Miao , C. N. Lau

The thermal conductivity of suspended single-layer graphene was measured as a function of temperature using Raman scattering spectroscopy on clean samples prepared directly on a prepatterned substrate by mechanical exfoliation without…

Mesoscale and Nanoscale Physics · Physics 2011-03-18 Jae-Ung Lee , Duhee Yoon , Hakseong Kim , Sang Wook Lee , Hyeonsik Cheong

Graphene exhibits extraordinary electronic and mechanical properties, and extremely high thermal conductivity. Being a very stable atomically thick membrane that can be suspended between two leads, graphene provides a perfect test platform…

We have investigated thermal conductivity of graphene laminate films deposited on polyethylene terephthalate substrates. Two types of graphene laminate were studied - as deposited and compressed - in order to determine the physical…

Materials Science · Physics 2014-11-21 H. Malekpour , K. -H. Chang , J. -C. Chen , C. -Y. Lu , D. L. Nika , K. S. Novoselov , A. A. Balandin

Graphene has drawn wide attention due to its exceptional thermal conductivity but complete understanding of thermal characteristics of polycrystalline graphene is still elusive to date. For the first time, herein, we have systematically…

Materials Science · Physics 2013-04-26 Young I. Jhon , Myung S. Jhon

The subject of thermal transport at the mesoscopic scale and in low-dimensional systems is interesting for both fundamental research and practical applications. As the first example of truly two-dimensional materials, graphene has…

Materials Science · Physics 2014-06-10 Yong Xu , Zuanyi Li , Wenhui Duan

Based on first-principles calculations and full iterative solution of the linearized Boltzmann-Peierls transport equation for phonons within three-phonon scattering framework, we characterize the lattice thermal conductivities $\kappa$ of…

Materials Science · Physics 2015-06-30 Youdi Kuang , Lucas Lindsay , Sanqiang Shi , Xinjiang Wang , Ruiqiang Guo , Baoling Huang

In addition to its exotic electronic properties graphene exhibits unusually high intrinsic thermal conductivity. The physics of phonons - the main heat carriers in graphene - was shown to be substantially different in two-dimensional (2D)…

Graphene has a high intrinsic thermal conductivity and a high electron mobility. The thermal conductivity of graphene can be significantly reduced when different carbon isotopes are mixed, which can enhance the performance of thermoelectric…

Mesoscale and Nanoscale Physics · Physics 2020-05-20 Eric Whiteway , Michael Hilke

Thermal conduction was explored and discussed through a combined theoretical and simulation approach in this work. The thermal conductivity k of polycrystalline graphene was calculated by molecular dynamics simulations based on a hexagonal…

Materials Science · Physics 2014-06-05 Yanlei Wang , Zhigong Song , Zhiping Xu

Graphene is a two-dimensional (2D) material with over 100-fold anisotropy of heat flow between the in-plane and out-of-plane directions. High in-plane thermal conductivity is due to covalent sp2 bonding between carbon atoms, whereas…

Materials Science · Physics 2013-01-29 Eric Pop , Vikas Varshney , Ajit K. Roy

Mapping the thermal transport properties of materials at the nanoscale is of critical importance for optimizing heat conduction in nanoscale devices. Several methods to determine the thermal conductivity of materials have been developed,…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Oliver Braun , Roman Furrer , Pascal Butti , Kishan R. Thodkar , Ivan Shorubalko , Ilaria Zardo , Michel Calame , Mickael L. Perrin

In this work, we present a comprehensive investigation of graphene's thermal conductivity using first-principles density functional perturbation theory calculations, with a focus on the phonon and lattice vibrational properties underlying…

Materials Science · Physics 2024-12-25 Archishman Gupta , Ankit Arora

We describe Raman spectroscopy based method of measuring thermal conductivity of thin films, and review significant results achieved with this technique pertinent to graphene and other two-dimensional materials. The optothermal Raman method…

Mesoscale and Nanoscale Physics · Physics 2019-03-18 Hoda Malekpour , Alexander A. Balandin

Thermal conductivity is a critical material property in numerous applications, such as those related to thermoelectric devices and heat dissipation. Effectively modulating thermal conductivity has become a great concern in the field of heat…

Materials Science · Physics 2023-04-06 Xiao Wan , Dongkai Pan , Jing-Tao Lü , Sebastian Volz , Lifa Zhang , Qing Hao , Yangjun Qin , Zhicheng Zong , Nuo Yang

Graphite is a well-studied material with known electronic and optical properties. Graphene, on the other hand, which is just one layer of carbon atoms arranged in a hexagonal lattice, has been studied theoretically for quite some time but…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 F. Molitor , D. Graf , C. Stampfer , T. Ihn , K. Ensslin

Declining the lattice thermal conductivity in graphene is essential for its thermoelectric applications. In high electron density systems, scatterings of phonons by electrons are no less than the phonon scatterings by other phonons. With…

Materials Science · Physics 2019-08-08 Ajit Jena , Wu Li

We review thermal properties of graphene and few-layer graphene, and discuss applications of these materials in thermal management of advanced electronics. The intrinsic thermal conductivity of graphene - among the highest of known…

Mesoscale and Nanoscale Physics · Physics 2015-08-11 Zhong Yan , Denis L. Nika , Alexander A. Balandin

In this paper we review thermal properties of graphene and multilayer graphene and discuss the optothermal technique developed for the thermal conductivity measurements. We also outline different theoretical approaches used for the…

Mesoscale and Nanoscale Physics · Physics 2015-03-10 Alexander A. Balandin , Denis L. Nika

The thermal conductivity of doped graphene flake of finite size is investigated with emphasis on the influence of mass of substituting atoms on this property. It is shown that the graphene doping by small concentrations of relatively heavy…

Mesoscale and Nanoscale Physics · Physics 2012-09-26 Vadym Adamyan , Vladimir Zavalniuk
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