| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 | 28권 1호, p.45 |
| 발표분야 | 특별 심포지엄 |
| 제목 | Rapid three-dimensional passive rotation micromixer using breakup process |
| 초록 | Three basic processes that occur during the process of mixing fluids are stretching and folding, diffusion, and breakup. Although stretching and folding the interface between two fluids by rotation results in the mixing at the microscale level in both low and high Reynolds number flows, it is not as effective at low Reynolds number as at high Reynolds number. Developing a rapid micromixer for microfluidic systems that can perform at low Reynolds number is a challenging task, so that microfluidic systems can demonstrate their full potential in commercial markets. Considerable efforts have been put in to develop microfluidic systems for performing biological and biochemical reaction. But it is still difficult to mix a combination of fluids in the microfluidic systems, because many of the low Reynolds number flows in microfluidic devices are laminar and the size of microchannel is too small to generate transverse flows. Here, we present a breakup method as a process for enhancing mixing in passive rotation micromixer. When a breakup method was applied, over 70% mixing can be achieved even after passing through a 4-mm long microchannel. The mixer was easily fabricated by soft lithography with polydimethylsiloxane (PDMS) and self-aligned bonding with methanol. The flow in the micromixer was visualized by computational fluid dynamics (CFD) method. Quantitative analysis was also conducted by confocal scanning microscope and image processing. , |
| 저자 | 박성진;김중경;박준하;정석;정찬일;장준근 |
| 소속 | 서울대 |
| 키워드 | Microfluidic System; Microfluidics; Micromixer; Bio-MEMS; Microchannel Flow; Microfabrication; PDMS; Soft Lithography |
