Vol. 28 No. 3 (2018)
Papers

Formation of Microdroplet in T-junction Microfluidic System: Experiment and Simulation

Nguyen Thi Thai
International Institute for Materials Science, Hanoi University of Science and Technology, Hanoi, Vietnam
Chu Thi Xuan
International Institute for Materials Science, Hanoi University of Science and Technology, Hanoi, Vietnam
Pham Duc Thanh
International Institute for Materials Science, Hanoi University of Science and Technology, Hanoi, Vietnam
Mai Anh Tuan
International Institute for Materials Science, Hanoi University of Science and Technology, Hanoi, Vietnam
Nguyen Phuong Nhung
PetroVietnam University, 672 Cach Mang Thang Tam, Long Toan Ward, Ba Ria city, Ba Ria Vung Tau Province
Cover 1, CIP Vol. 28 No. 3 (2018)

Published 14-11-2018

Keywords

  • COMSOL Multiphysic,
  • Microdroplet,
  • T-junction microfluidic system.

How to Cite

Thai, N. T., Xuan, C. T., Thanh, P. D., Tuan, M. A., & Nhung, N. P. (2018). Formation of Microdroplet in T-junction Microfluidic System: Experiment and Simulation. Communications in Physics, 28(3), 225. https://doi.org/10.15625/0868-3166/28/3/12530

Abstract

The purpose of this study is to investigate the formation of the water droplet in oil using T-junction microfluidic device. Both numerical and experimental methods have been developed to explore the dependence of droplet size on the flow rate of two immiscible liquids as well as the system geometry. The velocity of droplet in channel is also considered. The microfluidic system was fabricated with lithography technique. The 3D simulation was performed based on COMSOL software using level set method. The size of droplet is inversely proportional to the flow rate of continuous phase according to exponential function, increases linearly with the flow rate of dispersed phase, and decreases as the width of lateral channel decreases.  While the decreasing of the width of the lateral channel gives rise to the increasing of droplet velocity, the velocity of droplet depends linearly on the flow rate of disperse phase. A good consistence was observed between the theory and the experiment.

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