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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Disparate quasiballistic heat conduction regimes from periodic heat sources on a substrate
Lingping Zeng,Gang Chen +1 more
TL;DR: In this paper, the authors report disparate quasiballistic heat conduction trends for periodic nanoscale line heaters deposited on a substrate, depending upon whether measurements are based on the peak temperature of the heaters or the temperature difference between the peak and the valley of two neighboring heaters.
Journal ArticleDOI
Proton mobility and thermal conductivities of fuel cell polymer membranes: Molecular dynamics simulation
TL;DR: In this paper, the dynamic properties and thermal properties of fuel cell polymer membranes, such as Dow, Nafion and Aciplex, were investigated by using molecular dynamics simulations.
Journal ArticleDOI
Thermal conductivity of chirality-sorted carbon nanotube networks
TL;DR: In this paper, the authors used electrical heating and infrared thermal imaging to simultaneously study thermal and electrical transport in chirality-sorted carbon nanotubes (SWNTs) networks.
Journal ArticleDOI
Crossover from Ballistic to Diffusive Thermal Transport in Carbon Nanotubes
TL;DR: In this article, the authors present a theoretical scheme that seamlessly handles the crossover from fully ballistic to diffusive thermal transport regimes and apply it to carbon nanotubes, and clarify the mechanism of crossover in terms of the length-dependent characteristic frequency.
Journal ArticleDOI
An acoustic and dimensional mismatch model for thermal boundary conductance between a vertical mesoscopic nanowire/nanotube and a bulk substrate
TL;DR: In this paper, a theoretical model to calculate the thermal boundary conductance (Kapitza conductance) between a vertically grown mesoscopic nanowire/nanotube and a bulk substrate is presented.
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.