Modares Mechanical Engineering

Modares Mechanical Engineering

Numerical Study of an Electroosmotic Micromixer Based on G-shaped Electrodes

Document Type : Original Research

Authors
Mohammadjavad Bouloorchi Tabalvandani
Majid Badieirostami
University of Tehran
10.48311/mme.24.7.411
Abstract
The emergence of microfluidic devices for various applications has created a demand for enhancing the efficiency of the mixing. In this article, an electroosmotic micromixer based on G-shaped electrodes that are excited by AC waveform was designed. The proposed micromixer was simulated using COMSOL Multiphysics and the effects of various parameters including voltage, frequency, distance between electrodes, and the number of electrodes on the mixing efficiency have been characterized. By compiling the obtained results, the performance of the optimized model with four electrodes each having a 6.5 µm distance between their opposite polarities, excited with voltage of 1 V and frequency of 16 Hz was evaluated. The results demonstrated that the proposed micromixer was able to achieve a mixing efficiency of over 99.7% with a response time of 220 ms. Furthermore, the proposed device was designed regarding practical consideration, enabling the micromixer to be fabricated without the need of sophisticated instruments.
Keywords
Microfluidic Devices
Electroosmotic Micromixer
mixing efficiency

Subjects

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Modares Mechanical Engineering
Volume 24, Issue 7
June 2024
Pages 411-420