A novel effective micromixer having horizontal and vertical weaving flow motion

作者：Yoo Won Sul; Go Jung Sang; Park Seonghun; Park Sang Hu

来源：Journal of Micromechanics and Microengineering, 2012, 22(3): 035007.

DOI：10.1088/0960-1317/22/3/035007

The need for small-scale product-related biotechnology (BT) is rapidly increasing. An important product among these is high-performance biochips. In these devices, many microchannels are used for separation, filtering and mixing of various materials; therefore, for compactness, these reactions should be carried out in the small space of microfluidic systems. However, there is no turbulence that can induce materials to be mixed or reacted in the microchannel, especially with low Reynolds number laminar flow. Hence, it is difficult to sufficiently mix different materials. To address this problem, we propose the HVW (horizontal and vertical weaving) micromixer having crossed barriers inside of a microchannel, for effective mixing and reacting different materials. From CFD analysis, we have evaluated the mixing mechanism and efficiency of the HVW mixer. In this work, it is shown that the HVW mixer has the maximum mixing efficiency of 89.9% with a short mixing distance of 450 mu m at a Reynolds number of 5 with the barrier angle of 30 degrees, when water and water combined with Rhodamine B figment were used as fluids.

• 出版日期2012-3