Abstract
Microscale fluid flow using traveling-wave induction electrohydrodynamics is demonstrated. A three-phase traveling-wave device fabricated for the experiments provides a temporally and spatially varying electric field which helps induce ions in a fluid that is subjected to a temperature gradient. These ions are moved as the traveling wave propagates, resulting in a drag force being exerted on the surrounding fluid. Repulsion-type electrohydrodynamic flow is visualized in a microchannel of depth 50 νm, and results are presented in terms of velocity measurements using particle image velocimetry. The effects of voltage, traveling-wave frequency and the addition of externally applied heat are demonstrated and heat transfer capabilities of the micropump are discussed.
| Original language | English (US) |
|---|---|
| Article number | 055015 |
| Journal | Journal of Micromechanics and Microengineering |
| Volume | 19 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2009 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials
- Mechanical Engineering
- Electrical and Electronic Engineering
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