Y-채널 마이크로 믹서에서의 혼합 효율에 대한 LIF Confocal Microscope 측정

Abstract

Mixing is one of important processes in biochemical microfluidics. In efficient micromixer design, it is essential to analyze flow pattern and evaluate mixing efficiency. In this paper, mixing efficiency for Y-channel micromixer is measured by fluorescence intensity using LIF(Laser Induced Fluorescence) Confocal Microscope. With polydimethylsiloxane(PDMS), the Y-channel micromixers are fabricated and those are bonded to glass plate through Plasma bonding. For measuring of fluorescence intensity by He/Ne laser, Nile Blue A is injected into the micromixer. For visualization of the flow pattern and dynamic image capturing, CAM Scope is used with Blue and red dye. Modified simple algorithm for incompressible flow equation is solved for the same geometry as in the experiment for the comparison with computer simulation. From the experiments and simulation, accurate mixing efficiency evaluation for Y-channel micromixer is established.