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http://dx.doi.org/10.3795/KSME-A.2005.29.6.904

Development of a Three-Dimensional Barrier Embedded Kenics Micromixer by Means of a Micro-Stereolithography Technology  

Lee In Hwan (충북대학교 공과대학 기계공학부)
Kwon Tai Hun (포항공과대학교 기계공학과, 포항공과대학교 초소형기계기술연구소)
Cho Dong-Woo (포항공과대학교 기계공학과, 포항공과대학교 초소형기계기술연구소)
Kim Dong Sung (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.6, 2005 , pp. 904-912 More about this Journal
Abstract
The flow in a microchannel is usually characterized as a low Reynolds number (Re) so that good mixing is quite difficult to be achieved. In this regard, we developed a novel chaotic micromixer, named Barrier Embedded Kenics Micromixer (BEKM). In the BEKM, the higher level of chaotic mixing can be achieved by combining two general chaotic mixing mechanisms: (i) splitting/reorientation by helical elements inside the microchannel and (ii) stretching/folding via periodically located barriers on the channel wall. The fully three-dimensional geometry of BEKM was realized by a micro-stereolithography technology, in this study, along with a Kenics micromixer and a circular T-pipe. Mixing performances of three micromixers were experimentally characterized in terms of an average mixing color intensity of phenolphthalein. Experimental results show that BEKM has better mixing performance than other two micromixers. Chaotic mixing mechanism, proposed in this study, could be integrated as a mixing component with Micro-Total-Analysis-System, Lab-on-a-chip and so on.
Keywords
Barrier; Chaotic Mixing; Microfluidics; Micromixer; Micro-Stereolithography Technology;
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Times Cited By KSCI : 1  (Citation Analysis)
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