Title :
Droplet-based nano/picoliter mixer using hydrophobic microcapillary vent
Author :
Hosokawa, K. ; Fujii, T. ; Endo, I.
Author_Institution :
RIKEN, Inst. of Phys. & Chem. Res., Saitama, Japan
Abstract :
A mixing device for liquid droplets with pL-nL volume was developed for the first time. Two droplets with volume of 5 nL were pneumatically manipulated and joined together in a microchannel. For drawing off the air between two droplets, Hydrophobic Microcapillary Vent (HMCV)-a vent valve driven by the negative capillary action-was utilized. The mixer can be used as a diffusion-based optical chemical detector, or as a basic component in integrated multistep Micro Total Analysis Systems (/spl mu/TAS). Since the mixer has planar structure without moving parts, it can be fabricated by molding technique at low cost.
Keywords :
capillarity; chemical technology; drops; microfluidics; mixing; moulding; fabrication; hydrophobic microcapillary vent; liquid droplet; micro total analysis system; mixing device; molding; optical chemical detector; Biomedical optical imaging; Chemical analysis; Costs; Integrated optics; Laboratories; Microchannel; Optical devices; Optical mixing; Valves; Vents;
Conference_Titel :
Micro Electro Mechanical Systems, 1999. MEMS '99. Twelfth IEEE International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5194-0
DOI :
10.1109/MEMSYS.1999.746860
