Nanofluids with plasma treated diamond nanoparticles

Journal Article · Mon Mar 10 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2894520· OSTI ID:21120582

Qingsong, Yu ^[1]; Kim, Young Jo; Hongbin, Ma ^[2]

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1. Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, Missouri 65211 (United States)
2. Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, Missouri 65211 (United States)

In this study, diamond nanoparticles were plasma treated by glow discharges of methane and oxygen with an aim of improving their dispersion characteristics in a base fluid of water and enhancing the thermal conductivity of the resulting nanofluids. It was found that, after plasma treatment, stable nanofluids with improved thermal conductivity were obtained without using any stabilizing agents. With <0.15 vol % addition of plasma treated nanoparticles into water, a 20% increase in thermal conductivity was achieved and a 5%-10% increase in both fluid density and viscosity was observed.

• OSTI ID: 21120582
• Journal Information: Applied Physics Letters, Vol. 92, Issue 10; Other Information: DOI: 10.1063/1.2894520; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DIAMONDS
DISPERSIONS
GLOW DISCHARGES
METHANE
NANOSTRUCTURES
OXYGEN
PARTICLES
PLASMA
THERMAL CONDUCTIVITY
VISCOSITY
WATER