Nano Archive

Enhanced mass transport in nanofluids

Krishnamurthy, S and Lhattacharya, P and Phelan, PE and Prasher, RS (2006) Enhanced mass transport in nanofluids. NANO LETTERS, 6 (3). pp. 419-423.

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Official URL: http://dx.doi.org/10.1021/nl0522532

Abstract

Thermal conductivity enhancement in nanofluids, which are liquids containing suspended nanoparticles, has been attributed to localized convection arising from the nanoparticles' Brownian motion. Because convection and mass transfer are similar processes, the objective here is to visualize dye diffusion in nanofluids. It is observed that dye diffuses faster in nanofluids compared to that in water, with a peak enhancement at a nanoparticle volume fraction, phi, of 0.5%. A possible change in the slope of thermal conductivity enhancement at that same phi signifies that convection becomes less important at higher phi. The enhanced mass transfer in nanofluids can be utilized to improve diffusion in microfluidic devices.

Item Type:Article
Subjects:Physical Science > Nanophysics
ID Code:3779
Deposited By:SPI
Deposited On:22 Jan 2009 12:05
Last Modified:22 Jan 2009 12:05

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