1. SPLIT AND RECOMBINATION MICROMIXER BASED ON PDMS THREE-DIMENSIONAL MICRO STRUCTURE
Seok Woo Lee, Dong Sung Kim , Seung S. Lee , and Tai Hun Kwon
Korea Advanced Institute of Science and Technology,
Pohang University of Science and Technology
TRANSDUCERS’05
Reporter:宋建緯
2007/6/20

2. Outline Introduction Concept and Design Fabrication Experiment
Conclusion

3. Introduction Mixing in laminar flow molecular diffusion
stretching and folding

4. Introduction Active miromixer Passive micromixer
Reduce the mixing length
External energy
Passive micromixer
No external energy
Low cost
Lower mixing efficiency than active micromixers

5. Concept and Design Split and Recombination
Interfaces are increased to 2^(n+1)-1

6. Fabrication
Lower layer
Upper layer

7. Experiment result-1
NaOH&1%phenolphthalein water solution
Interface

8. Experiment result-2
Quantify the mixing efficiency

9. Mixing efficiency

10. Conclusion Increases interfaces exponentially 2^(n+1)-1
Problems in alignment

11. Thanks for Your Attention!