Title :
Rapid preparation of monodispersed droplets with confluent laminar flows
Author :
Nisisako, Takasi ; Torii, Toru ; Higuchi, Toshiro
Author_Institution :
Dept. of Precision Eng., Univ. of Tokyo, Japan
Abstract :
We study the formation of micro droplets in confluent two-phase flows in a microfluidic system. Instability at the interface of two immiscible liquids undergoing laminar flow generates micro droplets of highly uniform size. Under high shear stress the droplets form rapidly, and more than 2000 droplets can be prepared of similar size. Droplet size can be controlled by varying the flow conditions. Also, the effect of tension at the interface is studied by comparing results from PMMA/glass devices. Monodisperse polymeric microspheres were successfully obtained by polymerization of prepared monomer droplets.
Keywords :
drops; laminar flow; microfluidics; two-phase flow; PMMA/glass devices; confluent laminar flows; confluent two-phase flows; droplet size; interface instability; interface tension effects; micro droplets; microfluidic system; monodispersed droplets; polymerization; shear stress; Biomembranes; Chemical industry; Filters; Glass; Liquids; Microchannel; Microfluidics; Polymers; Production; Size control;
Conference_Titel :
Micro Electro Mechanical Systems, 2003. MEMS-03 Kyoto. IEEE The Sixteenth Annual International Conference on
Print_ISBN :
0-7803-7744-3
DOI :
10.1109/MEMSYS.2003.1189753
