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http://dx.doi.org/10.3795/KSME-B.2014.38.3.263

A New Concept to Transport a Droplet on Horizontal Hydrophilic/Hydrophobic Surfaces  

Myong, Hyon Kook (School of Mechanical Systems Engineering, Kookmin Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.3, 2014 , pp. 263-270 More about this Journal
Abstract
A fluid transport technique is a key issue for the development of microfluidic systems. In this paper, a new concept for transporting a droplet without external power sources is proposed and verified numerically. The proposed device is a heterogeneous surface which has both hydrophilic and hydrophobic horizontal surfaces. The numerical simulation to demonstrate the new concept is conducted by an in-house solution code (PowerCFD) which employs an unstructured cell-centered method based on a conservative pressure-based finite-volume method with interface capturing method (CICSAM) in a volume of fluid (VOF) scheme for phase interface capturing. It is found that the proposed concept for droplet transport shows superior performance for droplet transport in microfluidic systems.
Keywords
Droplet Transport; Hydrophilic/Hydrophobic Surface; Wall Adhesion; Surface Wettability Ggradient; VOF(Volume of Fluid); Numerical Simulation; CFD;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 Yang, J. T., Chen, J. C., Huang, K. J. and Yeh, J. A., 2006, "Droplet Manipulation on a Hydrophobic Textured Surface with Roughened Patterns," J. Microelectromechanical Systems, Vol. 15, No. 3, pp. 697-707.   DOI   ScienceOn
2 Shen, W., Kim, J. and Kim, C. J., 2002, "Controlling the Adhesive Force for Electrostatic Actuation of Microscale Mecury Drop by Physical Surface Modification," in Proc. IEEE Int. Conf. MEMS, Las Vegas, NV, Jan., pp. 52-55.
3 He B. and Lee, J., 2003, "Dynamic Wettability Switching by Surface Roughness Effect," in Proc. IEEE Int. Conf. MEMS, Kyoto, Japan, Jan., pp. 120-123.
4 Liao, Q., Qang, H., Zhu, X. and Li, M., 2006, "Liquid Droplet Movement on Horizontal Surface with Gradient Surface Energy," Science in China Series E: Technological Sciences, Vol. 49, No. 6, pp. 733-741.   DOI   ScienceOn
5 Ito, Y., Heydari, M., Hashimoto, A., Konno, T., Hirasawa, A., Hori, S., Kurita, K. and Nakajima, A., 2007, "The Movement of a Water Droplet on a Gradient Surface Prepared by Photodegradation," Langmuir, Vol. 23, No. 4, pp. 1845-1850.   DOI   ScienceOn
6 Myong, H. K. and Kim, J. E., 2006, "A Study on an Interface Capturing Method Applicable to Unstructured Meshes for the Analysis of Free Surface Flow" KSCFE J. of Computational Fluids Engineering, Vol. 11, No. 4, pp. 14-19.   과학기술학회마을
7 Myong, H. K., 2008, "Comparative Study on High Resolution Schemes in Interface Capturing Method Suitable for Unstructured Meshes" Trans. Korean Soc. Mech. Eng. B, Vol. 32, No. 1, pp. 23-29.   과학기술학회마을   DOI   ScienceOn
8 Myong, H. K., 2012, "Numerical Study on Multiphase Flows Induced by Wall Adhesion" Trans. Korean Soc. Mech. Eng. B, Vol. 36, No. 7, pp. 721-730.   과학기술학회마을   DOI   ScienceOn
9 Myong, H. K., 2011, "Numerical Simulation of Surface Tension-Dominant Multiphase Flows with Volume Capturing Method and Unstructured Grid System" Trans. Korean Soc. Mech. Eng. B, Vol. 35, No. 7, pp. 723-733.   과학기술학회마을   DOI   ScienceOn
10 Ubbink, O., 1997, Numerical Prediction of Two Fluid Systems with Sharp Interface, PhD Thesis, University of London.
11 Myong, H. K. and Kim. J., 2006, "Development of a Flow Analysis Code using an Unstructured Grid with the Cell-Centered Method," J. of Mechanical Science and Technology (KSME Int. J.), Vol. 20, No. 12, pp. 2218-2229.   과학기술학회마을   DOI   ScienceOn
12 Myong, H. K., 2009, "Numerical Simulation of Multiphase Flows with Material Interface due to Density Difference by Interface Capturing Method" Trans. Korean Soc. Mech. Eng. B, Vol. 33, No. 6, pp. 443-453.   과학기술학회마을   DOI   ScienceOn
13 Myong, H.K. and Kim, J., 2005, "Development of 3D Flow Analysis Code using Unstructured Grid System(1st Report, Numerical Method)," Trans. Korean Soc. Mech. Eng. B, Vol. 29, No. 9, pp. 1049-1056.   DOI   ScienceOn