抄録
A three-dimensional inlet flow structure inside a microfluidic element has been investigated using a micro-PIV (particle image velocimetry). The present study employs a state-of-art micro-PIV system which consists of epi-fluorescence microscope, 620nm diameter fluorescent seed particles and an 8-bit megapixel CCD camera. Velocity vector fields with a resolution of 6.8×6.8 μm has been obtained. In this study, the microfluidic elements were fabricated on plastic chips by means of MEMS processes and a subsequent molding process. A three-dimensional velocity distribution was investigated by means of traversing the measurement plane with respect to the spanwise direction.
