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Thermocapillary actuation of a water droplet encapsulated in an oil plug

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Thermocapillary actuation of a water droplet encapsulated in an oil plug

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Title: Thermocapillary actuation of a water droplet encapsulated in an oil plug
Author: Jiao, Zhenjun; Nguyen, Nam-Trung; Huang, Xiaoyang
Copyright year: 2007
Abstract: This paper reports the theoretical and experimental results of thermocapillary actuation of silicon oil plugs with encapsulated water droplet inside a capillary tube. The paper first describes the analytical models for this actuation concept. The model considers periodic actuation based on heat transfer in the capillary wall and the surface tension driven motion of the plug. In the experiments, both temperature field and plug motion were measured and evaluated. While the temperature field was measured by an infrared thermal tracer camera, the position of the plugs was automatically captured and evaluated with a CCD camera. Several interesting phenomena resulting from the interaction between surfactant modified silicone oil and water were observed. Different cases were observed and investigated: the water droplet partially wets the wall, the water droplet completely wets the wall, and the water droplet is encapsulated.
Subject: DRNTU::Engineering::Mechanical engineering.
Type: Journal Article
Series/ Journal Title: Journal of micromechanics and microengineering
School: School of Mechanical and Aerospace Engineering
Rights: © 2007 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Micromechanics and Microengineering, IOP Publishing Ltd. 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.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/17/9/013].
Version: Accepted version

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