Document Type
Conference Proceeding
Publication Date
2-5-2024
Abstract
In recent years 3D printing is becoming popular among researchers for its reliability, cost-effective materials, and ease of use without having costly clean rooms. In this work we report the process of fabrication of an array patterned microfluidic device with its effect in Electrochemical impedance spectroscopy (EIS) and particle manipulator. With the optimized design of channel geometry and electrode pattern, this device can use in different lab-on-a-chip applications. A 3D printed microfluidic channel fabrication process is presented here along with a CAD drawing with microstructural dimension analysis. EIS is an expeditiously developing method used in characterizing materials and interfaces. By using equivalent circuits as models, it can determine the electrical properties of heterogeneous systems like membranes or electrolytes. For evaluating Impedance spectroscopy, a small amount of perturbing sinusoidal signal was applied to the electrochemical cell and measured the resulting current response. We take EIS measurements in three different electrolytes DI water (18.72μS/cm), tap water (666.12 μS/cm), and PBS 1 × (8235.24 μS/cm) with three different ranges of conductivity to observe their characteristics changes and to compare them. We analyze the electric double layer (EDL) effect for the electrode and electrolyte interface and how electron transfer kinetics and diffusional characteristics affect the spectra EIS is applicable to determine different electrochemical processes that can happen at the same time. Also, using AC electrokinetic (ACEK) flow the device can be used as a potential microfluid manipulator with its array electrode pattern. Both the micro-PIV and EIS experiments were done to verify the data validity of the microfluidics mixers.
Recommended Citation
Kabir, S, Zepeda Saenz, H, & Islam, N. "Effect of EIS in a 3D Printed Non-Planer Array Patterned Microfluidic Devices." Proceedings of the ASME 2023 International Mechanical Engineering Congress and Exposition. Volume 12: Micro- and Nano-Systems Engineering and Packaging. New Orleans, Louisiana, USA. October 29–November 2, 2023. V012T13A025. ASME. https://doi.org/10.1115/IMECE2023-111762
Publication Title
Proceedings of the ASME 2023 International Mechanical Engineering Congress and Exposition
DOI
10.1115/IMECE2023-111762
Comments
Copyright © 2023 by ASME. Original published version available at https://doi.org/10.1115/IMECE2023-111762