Abstract
Two-fluid mixing phenomena were quantitatively visualized by a micro-resolution particle image velocimetry,(micro-PIV) in a T-shaped microchannel with two inlets, which was fabricated with silicone elastamer, i.e., polydimethylsiloxane (PDMS) using the replica molding technique. The objective of the present study was to investigate diffusion of particles affected by electrophoretic migration and electroosmotic flows. Particle velocities induced by electrophoresis were calculated from velocity profiles in a closed channel detected by a micro-PIV. Particles involved in a flow from the one side induced by electrophoresis were diffused remarkably when the electric field was applied to the junction area of the microchannel.
