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Microdroplet formation of water and nanofluids in heat-induced microfluidic T-junction

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Microdroplet formation of water and nanofluids in heat-induced microfluidic T-junction

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Title: Microdroplet formation of water and nanofluids in heat-induced microfluidic T-junction
Author: Murshed, S. M. Sohel; Tan, Say-Hwa; Nguyen, Nam-Trung; Wong, Teck Neng; Yobas, Levent
Copyright year: 2009
Abstract: This paper reports experimental investigations on the droplet formation and size manipulation of deionized water (DIW) and nanofluids in a microfluidic T-junction at different temperatures. Investigations of the effect of microchannel depths on the droplet formation process showed that the smaller the depth of the channel the larger the increase of droplet size with temperature. Sample nanofluids were prepared by dispersing 0.1 volume percentage of titanium dioxide (TiO2) nanoparticles of 15 nm and 10 nm × 40 nm in DIW for their droplet formation experiments. The heater temperature also affects the droplet formation process. Present results demonstrate that nanofluids exhibit different characteristics in droplet formation with the temperature. Addition of spherical-shaped TiO2 (15 nm) nanoparticles in DIW results in much smaller droplet size compared to the cylindrical-shaped TiO2 (10 nm × 40 nm) nanoparticles. Besides changing the interfacial properties of based fluid, nanoparticles can influence the droplet formation of nanofluids by introducing interfacial slip at the interface. Other than nanofluid with cylindrical-shaped nanoparticles, the droplet size was found to increase with increasing temperature.
Subject: DRNTU::Engineering::Mechanical engineering.
Type: Journal Article
Series/ Journal Title: Microfluidics and nanofluidics
School: School of Mechanical and Aerospace Engineering
Rights: © Springer-Verlag 2008. This is the author created version of a work that has been peer reviewed and accepted for publication by Microfluidics and Nanofluidics, Springer-Verlag. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: DOI: [http://dx.doi.org/10.1007/s10404-008-0323-3].
Version: Accepted version

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