Simulation and experiment of capillary driven passive planar baffle micro-mixer

Author

Liang, B.T. ; Lai, C.C. ; Chung, C.K.

Author_Institution

Dept. of Mech. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2015

fDate

7-11 April 2015

Firstpage

120

Lastpage

123

Abstract

In this study, we present a capillary driven and easily fabricated passive planar baffle micro-mixer with a trigger valve. The micro-mixers were fabricated in PMMA sheets (2 mm in thickness) by CO₂ laser ablation and thermal bonding, and the microfluidic experiments were observed and recorded using flow visualization with a CCD. The results show that design of channel height ranges (to 220~400 μm) can be promoted by modifying the staggered baffle structure, and the meander baffle structure mixer performs the best mixing efficiency (94%) because of longest flow time and shortest average diffusion distance (300 μm) in mixing zone.

Keywords

bonding processes; flow visualisation; mixing; valves; CCD; PMMA sheets; best mixing efficiency; capillary driven passive planar baffle micromixer; channel height; flow visualization; laser ablation; meander baffle structure mixer; microfluidic experiments; mixing zone; shortest average diffusion distance; staggered baffle structure; thermal bonding; trigger valve; Charge coupled devices; Fluids; Laser ablation; Laser modes; Mixers; Steady-state; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems (NEMS), 2015 IEEE 10th International Conference on

Conference_Location

Xi´an

Type

conf

DOI

10.1109/NEMS.2015.7147388

Filename

7147388