Journal ArticleDOI
Thermal conductance and thermopower of an individual single-wall carbon nanotube.
TLDR
It is observed that the thermal conductance of a 2.76-microm-long individual suspended single-wall carbon nanotube (SWCNT) was very close to the calculated ballistic thermal conductances of a 1-nm-diameter SWCNT without showing signatures of phonon-phonon Umklapp scattering for temperatures between 110 and 300 K.Abstract:
We have observed experimentally that the thermal conductance of a 2.76-μm-long individual suspended single-wall carbon nanotube (SWCNT) was very close to the calculated ballistic thermal conductance of a 1-nm-diameter SWCNT without showing signatures of phonon−phonon Umklapp scattering for temperatures between 110 and 300 K. Although the observed thermopower of the SWCNT can be attributed to a linear diffusion contribution and a constant phonon drag effect, there could be an additional contact effect.read more
Citations
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CNT-sandwiched copper composites as super thermal conductors for heat management
TL;DR: In this paper, a class of sandwich-like CNT/Cu/CNT nanotubes which possess high thermal conductivity revealed by molecular dynamics simulations was numerically designed and the enhancement factor of the composite using single-walled CNT is 37.5 times of that of a 5-nm radius copper nanowire.
Journal ArticleDOI
Large tunability in the mechanical and thermal properties of carbon nanotube-fullerene hierarchical monoliths
TL;DR: This work proposes a new class of hierarchical carbon based nano-truss structures consisting of fullerene joints attached with carbon nanotubes as the truss forming a three-dimensional network and utilizes the Green-Kubo method under the equilibrium molecular dynamics simulations framework to show that the thermal conductivities of these structures can be manipulated by varying the densities of the overall structures.
Journal ArticleDOI
Impact of topological line defects on wall roughness and thermal conductivity of carbon nanotubes: A molecular dynamics study
Farrokh Yousefi,Farhad Khoeini +1 more
TL;DR: In this paper, the influence of topological line defects on thermal conductivity of single-walled carbon nanotube (SWCNT) through molecular dynamics simulations was investigated.
Journal ArticleDOI
TG–MS study on the effect of multi-walled carbon nanotubes and nano-Fe2O3 on thermo-oxidative stability of silicone rubber
TL;DR: In this article, a series of nanoparticles, including carbon nanotubes (CNTs), Fe2O3 with two different crystalline forms, a mixture of CNTs and γ-Fe 2 O 3 (γ-Fe2 O 3 + CNT), and a modified CNT modified with Fe 2 O3, were used to improve the performance of silicone rubber.
Journal ArticleDOI
Large Thermospin Effects in Carbon Nanotubes with Vacancy Defects
TL;DR: In this article, the authors systematically investigated the possibility of improving thermospin effects in single-walled carbon nanotubes (SWCNTs) by vacancy engineering and showed that the spin-up and spin-down currents with the same magnitudes but opposite directions can be generated without any applied bias.
References
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Electronic transport in mesoscopic systems
TL;DR: In this article, preliminary concepts of conductance from transmission, S-matrix and Green's function formalism are discussed. And double-barrier tunnelling is considered.
Electronic Transport in Mesoscopic Systems
TL;DR: In this article, preliminary concepts of conductance from transmission, S-matrix and Green's function formalism are discussed. And double-barrier tunnelling is considered.
Journal ArticleDOI
Thermal transport measurements of individual multiwalled nanotubes.
TL;DR: The thermal conductivity and thermoelectric power of a single carbon nanotube were measured using a microfabricated suspended device and shows linear temperature dependence with a value of 80 microV/K at room temperature.
Journal ArticleDOI
Unusually High Thermal Conductivity of Carbon Nanotubes
TL;DR: An unusually high value, lambda approximately 6600 W/m K, is suggested for an isolated (10,10) nanotube at room temperature, comparable to the thermal conductivity of a hypothetical isolated graphene monolayer or diamond.
Journal ArticleDOI
Extreme oxygen sensitivity of electronic properties of carbon nanotubes
TL;DR: The results, although demonstrating that nanotubes could find use as sensitive chemical gas sensors, likewise indicate that many supposedly intrinsic properties measured on as-prepared nanotube may be severely compromised by extrinsic air exposure effects.