Journal ArticleDOI
Anomalous thermal conductivity enhancement in nanotube suspensions
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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.read more
Citations
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Synthesis of Al2O3–Cu/water hybrid nanofluids using two step method and its thermo physical properties
TL;DR: In this article, Al2O3-Cu hybrid particles have been synthesized by hydrogen reduction technique from the powder mixture of Al 2O3 and CuO in 90:10 weight proportions obtained from a chemical route synthesis and the experimental results have shown that both thermal conductivity and viscosity of the prepared hybrid nanofluids increase with the nanoparticles volume concentration.
Journal ArticleDOI
Experimental investigations and theoretical determination of thermal conductivity and viscosity of Al2O3/water nanofluid
TL;DR: In this paper, experimental investigations and theoretical determination of effective thermal conductivity and viscosity of Al 2 O 3 /H 2 O nanofluid are reported and it is found that the viscoverage increase is substantially higher than the increase in thermal conductivities.
Journal ArticleDOI
Stability and thermal conductivity characteristics of nanofluids
Yujin Hwang,Jae-Keun Lee,C.H. Lee,Yunjin Jung,Seongir Cheong,Chun-Sung Lee,B.C. Ku,Seok Pil Jang +7 more
TL;DR: In this article, various nanoparticles such as multi-walled carbon nanotube (MWCNT), fullerene, copper oxide, and silicon dioxide have been used to produce nanofluids for enhancing thermal conductivity and lubricity.
Journal ArticleDOI
Predictions of effective physical properties of complex multiphase materials
Moran Wang,Ning Pan +1 more
TL;DR: In this article, a review of the existing major analytical approaches dealing with material properties modeling is presented, with a focus on some recent advances in numerical methodology that are able to predict more accurately and efficiently the effective physical properties of multiphase materials with complex internal microstructures.
Journal ArticleDOI
Thermophysical and electrokinetic properties of nanofluids – A critical review
TL;DR: In this paper, various aspects of nanofluids including synthesis, potential applications, experimental and analytical studies on the effective thermal conductivity, effective thermal diffusivity, convective heat transfer, and electrokinetic properties are critically reviewed.
References
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Journal ArticleDOI
Helical microtubules of graphitic carbon
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.
Journal ArticleDOI
Thermal Conductivity of Heterogeneous Two-Component Systems
R. L. Hamilton,O. K. Crosser +1 more
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