A Novel Design for an Effective Passive Micromixer

• Main Authors: Chun-fei Kung, 宮春斐
• Other Authors: Chin-Chou Chu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/47737913894898253037

碩士 === 國立臺灣大學 === 應用力學研究所 === 91 === Abstract In the micro scale, it is a very important subject to let two or more fluids mixing completely in a short time. In the recent decades, it has raised a wide interest in many application of bio-detection, like drug delivery, biomedical diagnose, DNA analysis, and fast drug discovery. However, the traditional ways for mixing enhancement, such as turbulence, three-dimensional flows, and the external force can neither function well nor work efficiently in micro scale. This paper proposes a new type of high efficient micro mixer, which without any active devices such as pumps, valves, or external energies. These energies are electrostatic, or magnetic fields. In this novel mixing device, the surface tension force from the working fluid is the only energy resource employed passively to transport liquid. Then the herringbonelike structure is arranged on the bottom of the channel, which can let liquid to produce three-dimensional fluid field automatically. It also can greatly improve the mixing efficiency to achieve the goal of rapidly and mixing completely. This device can also be batch-fabricated and applied to power-free mTAS or low-cost lab on a chip MEMS fluid system.