Taha-Tijerina, J.J. and Narayanan, T.N. and Tiwary, C.S. and Lozano, K. and Chipara, M. and Ajayan, P.M. (2014) Nanodiamond-Based Thermal Fluids. ACS Applied Materials and Interfaces, 6. pp. 4778-4785. ISSN 1944-8244

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Dispersions of nanodiamond (average size ∼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: Article
Uncontrolled Keywords: nanofluids; diamond; mechanical properties; thermal conductivity; viscosity
Subjects: Functional Materials
Depositing User: Dr. N Meyyappan
Date Deposited: 14 May 2015 09:37
Last Modified: 14 May 2015 09:37
URI: http://cecri.csircentral.net/id/eprint/3142

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