Micro-PIV measurement of internal flow in a micro droplet
- Resource Type
- Conference
- Authors
- Haruyuki KINOSHITA; Toshio KOBAYASHI; Marie OSHIMA
- Source
- KOREA-JAPAN Joint Seminar on Particle Image Velocimetry. 2004-12 2004(12):141-145
- Subject
- Micro-PIV
Droplet
Recirculation flow
Microfluidic device
- Language
- Korean
Visualization and PIV measurements of the symmetrical recirculation flow in a nanoliter-sized droplet have been performed using the micro PIV system. The airflow sweeps over the nanoliter-sized liquid droplet fixed in a microchannel and the frictional force drags the liquid on the round interface, which causes the symmetrical recirculation flow in the droplet. The internal recirculation flow in the droplet has been visualized and measured successfully. The results of micro PIV measurement show the maximum speed of the recirculation flow is up to 10 ㎜/s. The high-speed recirculation can enhance a stirring effect and generate strong shear in the droplet, resulting in acceleration of mixing.