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Journal ArticleDOI

Anomalous thermal conductivity enhancement in nanotube suspensions

Stephen U. S. Choi, +4 more
- 24 Sep 2001 - 
- Vol. 79, Iss: 14, pp 2252-2254
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TLDR
In this paper, the authors have produced nanotube-in-oil suspensions and measured their effective thermal conductivity, which is anomalously greater than theoretical predictions and is nonlinear with nanotubes loadings.
Abstract
We have produced nanotube-in-oil suspensions and measured their effective thermal conductivity. The measured thermal conductivity is anomalously greater than theoretical predictions and is nonlinear with nanotube loadings. The anomalous phenomena show the fundamental limits of conventional heat conduction models for solid/liquid suspensions. We have suggested physical concepts for understanding the anomalous thermal behavior of nanotube suspensions. In comparison with other nanostructured materials dispersed in fluids, the nanotubes provide the highest thermal conductivity enhancement, opening the door to a wide range of nanotube applications.

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Journal ArticleDOI

Effects of anisotropy, aspect ratio, and nonstraightness of carbon nanotubes on thermal conductivity of carbon nanotube composites

TL;DR: In this paper, simple models for the thermal conductivity enhancements in carbon nanotube (CNT) composites are presented as analytical functions of volume fraction, anisotropic thermal conductivities, aspect ratio, nonstraightness, and interfacial thermal resistance of the CNTs.
Journal ArticleDOI

An experimental investigation on thermo-physical properties and overall performance of MWCNT/heat transfer oil nanofluid flow inside vertical helically coiled tubes

TL;DR: In this article, an experimental investigation on the thermo-physical properties and overall performance of MWCNT/heat transfer oil nanofluids flow inside vertical helically coiled tubes was conducted.
Journal ArticleDOI

Review of heat transfer in nanofluids: Conductive, convective and radiative experimental results

TL;DR: An analytical overview of experimental results about the heat transfer capabilities of nanofluids is presented in this paper, using widely scattered available information from diverse literature sources, and a selection of the most valuable papers has been done, taking into account different points of view and hypotheses.
Journal ArticleDOI

Thermal and rheological properties of carbon nanotube-in-oil dispersions

TL;DR: In this paper, the effects of dispersant concentration, dispersing energy, and nanoparticle loading on thermal conductivity and steady shear viscosity of nanotube-in-oil dispersions were investigated.
Journal ArticleDOI

Graphene based nanofluids and nanolubricants – Review of recent developments

TL;DR: An overview of the remarkable research progress on graphene-based nanofluids and nanolubricants witnessed in the recent years is presented in this article, where the authors highlight various synthesis methods, characterization techniques and properties measurement procedures that have been experimented and developed.
References
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Journal ArticleDOI

Helical microtubules of graphitic carbon

Sumio Iijima
- 01 Nov 1991 - 
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Book

A Treatise on Electricity and Magnetism

TL;DR: The most influential nineteenth-century scientist for twentieth-century physics, James Clerk Maxwell (1831-1879) demonstrated that electricity, magnetism and light are all manifestations of the same phenomenon: the electromagnetic field as discussed by the authors.
Book

Physical properties of carbon nanotubes

TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
Journal ArticleDOI

Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles

TL;DR: In this paper, it was shown that a "nanofluid" consisting of copper nanometer-sized particles dispersed in ethylene glycol has a much higher effective thermal conductivity than either pure or pure glycol or even polyethylene glycol containing the same volume fraction of dispersed oxide nanoparticles.
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