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Individual carbon nanotubes (CNTs) possess extremely high thermal conductivities. However, the thermal conductivities and their anisotropy of macroscopic assemblies of CNTs have so far remained small. Here, we report results of directional…

We report electrical transport experiments using the phenomenon of electrical breakdown to perform thermometry that probe the thermal properties of individual multi-walled nanotubes. Our results show that nanotubes can readily conduct heat…

介观与纳米尺度物理 · 物理学 2009-11-11 H. -Y. Chiu , V. V. Deshpande , H. W. Ch. Postma , C. N. Lau , C. Mikó , L. Forró , M. Bockrath

Modelling heat transfer of carbon nanotubes is important for the thermal management of nanotube-based composites and nanoelectronic device. By using a finite element method for three-dimensional anisotropic heat transfer, we have simulated…

材料科学 · 物理学 2015-05-18 Xin-She Yang

Multiwalled carbon nanotubes are shown to be ballistic conductors at room temperature, with mean free paths of the order of tens of microns. These experiments follow and extend the original experiments by Frank et al (Science, 280 1744…

材料科学 · 物理学 2007-05-23 Philippe Poncharal , Claire Berger , Yan Yi , Z. L. Wang , Walt A. de Heer

Combining equilibrium and non-equilibrium molecular dynamics simulations with accurate carbon potentials, we determine the thermal conductivity $\lambda$ of carbon nanotubes and its dependence on temperature. Our results suggest an…

材料科学 · 物理学 2009-10-31 Savas Berber , Young-Kyun Kwon , David Tomanek

The thermal conductivity and thermoelectric power of a single carbon nanotube were measured using a microfabricated suspended device. The observed thermal conductivity is more than 3000 W/K m at room temperature, which is two orders of…

介观与纳米尺度物理 · 物理学 2009-11-07 P. Kim , L. Shi , A. Majumdar , P. L. McEuen

Dimensions and molecular structure play pivotal roles in the principle of heat conduction. The dimensional characteristics of solution within nanoscale systems depend on the degrees of confinement. However, the influence of such variations…

软凝聚态物质 · 物理学 2024-05-14 Shun Imamura , Yusei Kobayashi , Eiji Yamamoto

I estimate maximum thermal conductivity $\kappa$ of a perfectly aligned bundle of single wall carbon nanotubes. Each row of aligned nanotubes has a discrete structure. It consists of segments of nanotubes with length $L$. The spacing…

材料科学 · 物理学 2007-05-23 A. L. Efros

We theoretically compute the interface thermal resistance between crossing single walled carbon nanotubes of various chiralities, using an atomistic Green's function approach with semi-empirical potentials. The results are then used to…

材料科学 · 物理学 2008-09-17 Y. Chalopin , S. Volz , N. Mingo

We theoretically estimate the electron-phonon coupling constant lambda for metallic single-walled carbon nanotubes with a diameter of 1.4 nm. The partial electron-phonon coupling constant for the hardest phonon mode is estimated to be about…

超导电性 · 物理学 2007-05-23 Guo-meng Zhao

We present a study of the phononic thermal conductivity of isotopically disordered carbon nanotubes. In particular, the behavior of the thermal conductivity as a function of the system length is investigated, using Green's function…

材料科学 · 物理学 2008-11-03 Gabriel Stoltz , Michele Lazzeri , Francesco Mauri

Molecular dynamics simulations and nonequilibrium importance sampling are used to study the heat transport of low dimensional carbon lattices. For both carbon nanotubes and graphene sheets heat transport is found to be anomalous, violating…

介观与纳米尺度物理 · 物理学 2020-01-08 Ushnish Ray , David T. Limmer

We present analytical model and molecular dynamics simulations of phonon heat transport in nanowires and nanoribbons with anharmonic lattices and dynamically rough surfaces and edges. In agreement with recent experiments on heat transport…

统计力学 · 物理学 2011-12-30 Yuriy A. Kosevich , Alexander V. Savin

The thermal properties of a suspended metallic single-wall carbon nanotube (SWNT) are extracted from its high-bias (I-V) electrical characteristics over the 300-800 K temperature range, achieved by Joule self-heating. The thermal…

介观与纳米尺度物理 · 物理学 2015-06-25 Eric Pop , David Mann , Qian Wang , Kenneth Goodson , Hongjie Dai

The universal features of quantized thermal conductance of carbon nanotubes (CNTs) are revealed through theoretical analysis based on the Landauer theory of heat transport. The phonon-derived thermal conductance of semiconducting CNTs…

材料科学 · 物理学 2009-11-10 Takahiro Yamamoto , Satoshi Watanabe , Kazuyuki Watanabe

This review summarizes the current studies of the thermal transport properties of one-dimensional (1D) carbon nanomaterials and nanoarchitectures. Considering different hybridization states of carbon, emphases are laid on a variety of 1D…

材料科学 · 物理学 2018-03-20 Haifei Zhan , Yuantong Gu

Semiconducting single-walled carbon nanotubes are studied in the diffusive transport regime. The peak mobility is found to scale with the square of the nanotube diameter and inversely with temperature. The maximum conductance, corrected for…

介观与纳米尺度物理 · 物理学 2009-11-11 Xinjian Zhou , Ji-Yong Park , Shaoming Huang , Jie Liu , Paul L. McEuen

The electronic and transport properties of (10, 0) single-walled carbon nanotube are studied by performing the first-principles calculations and semi-classical Boltzmann theory. It is found that the (10, 0) tube exhibits considerably large…

介观与纳米尺度物理 · 物理学 2016-01-06 P. H. Jiang , H. J. Liu , D. D. Fan , L. Cheng , J. Wei , J. Zhang , J. H. Liang , J. Shi

We report low temperature transport measurements on suspended single walled carbon nanotubes (both individual tubes and ropes). The technique we have developed, where tubes are soldered on low resistive metallic contacts across a slit,…

介观与纳米尺度物理 · 物理学 2009-11-10 A. Kasumov , M. Kociak , M. Ferrier , R. Deblock , S. Gueron , B. Reulet , I. Khodos , O. Stephan , H. Bouchiat

The thermal conductivity, k(T), of bulk single-wall carbon nanotubes (SWNT's) displays a linear temperature dependence at low T that has been attributed to 1D quantization of phonons. To explore this issue further, we have measured the k(T)…

材料科学 · 物理学 2016-08-31 M. C. Llaguno , J. Hone , A. T. Johnson , J. E. Fischer
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