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Concentration of 5 μm latex particles by the discharge driven vortex. Images are a bottom view of the sample, through the glass slide. (a) Prior to application of the applied field of 3 kV, 40 kHz, the stagnation point is relatively clear of latex particles. (b) Concentration of the latex particles 15 min after the AC field is applied. A packed mound of particles is apparent and is concentrated to a region that is roughly 200 μm in diameter.
