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Chaotic motion of microplugs under high-frequency thermocapillary actuation

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Chaotic motion of microplugs under high-frequency thermocapillary actuation

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dc.contributor.author Jiao, Zhenjun
dc.contributor.author Nguyen, Nam-Trung
dc.contributor.author Huang, Xiaoyang
dc.date.accessioned 2012-05-11T01:55:53Z
dc.date.available 2012-05-11T01:55:53Z
dc.date.copyright 2007
dc.date.issued 2012-05-11
dc.identifier.citation Jiao, Z. J, Nguyen, N. T., & Huang, X. Y. (2007). Chaotic motion of microplugs under high-frequency thermocapillary actuation. Journal of Micromechanics and Microengineering, 17(1), 180-185.
dc.identifier.uri http://hdl.handle.net/10220/7849
dc.description.abstract This paper reports experimental results on chaotic motion of liquid plugs under high-frequency thermocapillary actuation. In the experiments, two heaters were alternately activated. The liquid plug was positioned in a glass capillary between these two heaters. The periodic temperature gradients generated by the two heaters made the liquid plug move back and forth. The images of the plug were captured by a camera. Plug position by a customized image-processing programme. The results were recorded as time series for further analysis. The nonlinear motion of the liquid plug in a glass capillary was systematically investigated with tools coming from chaotic dynamics. Phase-space portraits are reconstructed from the time series of the plug position obtained in the experiments. The results show that the limit sets formed by the phase-space trajectories are attractors. The largest Lyapunov exponent and correlation dimension of these attractors are calculated and indicate that these attractors are chaotic. A chaotic plug motion has potential applications in fluid mixing inside liquid plugs of capillary-based microfluidics. External chaotic motion could improve mixing in liquid plugs of capillary-based lab-on-a-chip platforms.
dc.format.extent 13 p.
dc.language.iso en
dc.relation.ispartofseries Journal of micromechanics and microengineering
dc.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: [http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/17/1/023].
dc.subject DRNTU::Engineering::Mechanical engineering.
dc.title Chaotic motion of microplugs under high-frequency thermocapillary actuation
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/17/1/023
dc.description.version Accepted version
dc.identifier.rims 92343

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