High performance microfludic rectifier utilizing self-induced virtual valves in a sudden expansion channel with a block structure

Hui Chun Chen, Chien Hsiung Tsai, Lung Ming Fu, Che Hsin Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study proposed a high performance microfluidic rectifier utilizing self-induced virtual valves in a sudden expansion channel. An embedded block structure is used to enhance the formation of vortices at the sudden expansion channel. The effective hydraulic diameter of the microchannel is reduced due to the formation of the vortices and it hence increases the flow resistance of the microchannel. Flow rectification can be achieved without using any moving part. The developed flow rectifier is able to work at high pressure conditions which most MEMS devices using moving parts can't sustain. Numerical and experimental investigations are used to evaluate the performance of the microfluidic rectifier. Results show that the embedded block structure greatly enhances the performance of the rectifier. The calculated rectification performance indexes (diodicity, Di) reach as high as 1.5 and 1.76 for experimental and numerical results, respectively. The performance of the developed microfluidic rectifier beats the performance of other valveless rectifiers utilizing Tesla valves, simple nozzle/diffuser structures or cascaded nozzle/diffuser structures.

Original languageEnglish
Title of host publicationMEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest
Pages1059-1062
Number of pages4
DOIs
Publication statusPublished - 2010 Jun 1
Event23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010 - Hong Kong, China
Duration: 2010 Jan 242010 Jan 28

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010
CountryChina
CityHong Kong
Period10-01-2410-01-28

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Chen, H. C., Tsai, C. H., Fu, L. M., & Lin, C. H. (2010). High performance microfludic rectifier utilizing self-induced virtual valves in a sudden expansion channel with a block structure. In MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest (pp. 1059-1062). [5442392] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). https://doi.org/10.1109/MEMSYS.2010.5442392