Title :
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
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;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2015 IEEE 10th International Conference on
Conference_Location :
Xi´an
DOI :
10.1109/NEMS.2015.7147388
