Conference proceeding
A STUDY OF AC ELECTROKINETIC PHENOMENA UNDER DC ELECTROOSMOTIC FLOWS
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 13, PTS A AND B, v 13, pp 1053-1060
01 Jan 2009
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
AC electrokinetic phenomena have drawn much attention in the microfluidics and lab-on-a-chip Communities since these techniques have a great potential for effective manipulation of small particles (micro- to nanoscale particles, polymer beads to biological cells and molecules) and fluids in microchannel environments. One unanswered question Is how the AC electrokinetic phenomena are affected by DC electroosmotic flows that are often employed in lab-on-a-chip systems as a pumping method. This paper presents experimental and numerical Studies on the interaction between AC electrokinetic phenomena and DC electroosmotic flows. The motions of polystyrene microbeads suspended in deionized water in a microchannel were Studied as the main AC and DC electrokinetics parameters were varied. Numerical simulations of flow field were performed using COMSOL Multiphysics software. The forces considered in the numerical simulation include electrophoresis, DC electroosmosis, dielectrophoresis, AC electroosmosis, electrothermal effect, diffusion, Stokes drag force, and gravity. The numerical simulation results showed good agreements with experimental data. We believe that this study will contribute to the understanding of the interactions between DC and AC electrokinetic phenomena and thus enable researchers to develop powerful microdevices based on the combination of these two techniques.
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Details
- Title
- A STUDY OF AC ELECTROKINETIC PHENOMENA UNDER DC ELECTROOSMOTIC FLOWS
- Creators
- Doh-Hyoung Lee - Drexel UniversityJonghyun Oh - Drexel UniversityRobert Hart - Drexel UniversityBakhtier Farouk - Drexel UniversityHongseok (Moses) Noh - Drexel UniversityASME
- Publication Details
- PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 13, PTS A AND B, v 13, pp 1053-1060
- Conference
- ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 13
- Publisher
- Amer Soc Mechanical Engineers
- Number of pages
- 8
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000266546900147
- Scopus ID
- 2-s2.0-70049092639
- Other Identifier
- 991019170466304721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Mechanical
- Nanoscience & Nanotechnology