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Nanodiamond-Based Thermal Fluids

Taha-Tijerina, Jose Jaime and Narayanan, Tharangattu Narayanan and Tiwary, Chandra Sekhar and Lozano, Karen and Chipara, Mircea and Ajayan, Pulickel M (2014) Nanodiamond-Based Thermal Fluids. In: ACS APPLIED MATERIALS & INTERFACES, 6 (7). pp. 4778-4785.

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Official URL: http://dx.doi.org/10.1021/am405575t


Dispersions of nanodiamond (average size similar to 6 nm) within dielectric insulator mineral oil are reported for their enhanced thermal conductivity properties and potential applications in thermal management. Dynamic and kinematic viscosities-very important parameters in thermal management by nanofluids-are investigated. The dependence of the dynamic viscosity is well-described by the theoretical predictions of Einstein's model. The temperature dependence of the dynamic viscosity obeys an Arrhenius-like behavior, where the activation energy and the pre-exponential factor have an exponential dependence on the filler fraction of nanodiamonds. An enhancement in thermal conductivity up to 70% is reported for nanodiamond based thermal fluids. Additional electron microscopy, Raman spectroscopy and X-ray diffraction analysis support the experimental data and their interpretation.

Item Type: Journal Article
Additional Information: copyright for this article belongs to AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Keywords: nanofluids; diamond; mechanical properties; thermal conductivity; viscosity
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 16 Jun 2014 10:27
Last Modified: 16 Jun 2014 10:27
URI: http://eprints.iisc.ac.in/id/eprint/49183

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