高速局所流体制御を用いたマイクロ渦生成によるオンチップミキシング

抄録

We proposed on-chip mixing method by micro-vortex generation using high-speed local-flow. Since the flow condition tends to be laminar flow in a microfluidic device due to microscopic dimensions of microchannel, high-speed mixing using convection has been difficult in conventional on-chip mixers. In this paper, we fabricated a high-rigidity microfluidic chip which has membrane pump as high-speed local-flow control unit. By integrating the microfluidic chip with high-speed piezoelectric actuator, we constructed high-speed local-flow control system and utilized it to generate vortex in a microfluidic chip. As a result, we succeeded in on-chip mixing within 1.5 ms by using the micro vortex.