シースフローを用いたマイクロチャネル内磁性粒子流れの可視化(流体工学,流体機械)

概要

論文の詳細を見る
The movement of magnetic particles in a micro-separation channel with a cross-section of 0.5×5 mm was investigated for the purpose of improving the separation efficiency. Since it is hard to observe the particles (diameter : about 3 μm) movement sideways because the separation channel is shallow, a sheath flow chamber specialized for microscopic-flow visualization was developed. It can make the flow velocity profile in the chamber similar to that between the upper and bottom walls in the separation channel. In addition, to check the velocity vector of the particles, a stroboscopic illumination with two sub-micro-second pulse lights was combined with the chamber. This combined system clearly showed the particle movement in the small gap between the channel walls. Moreover, the particles were captured closer to the bottom of the chamber, but conglomerated and piled tip at the front of the magnet position as flow speed decreased.
社団法人日本機械学会の論文
2002-01-25