Document Detail

Size-selective separation of micro beads by utilizing secondary flow in a curved rectangular microchannel.
MedLine Citation:
PMID:  19209339     Owner:  NLM     Status:  PubMed-not-MEDLINE    
This paper presents a microscale benefit of a secondary flow obtained in a curved rectangular microchannel, which is generally unfavorable and negligible in conventional fluid flow. We have demonstrated the separation and sorting of micro beads by their size using secondary flow. The physical mechanism occurring in the size-selective separation was explained based on the numerical analysis of the characteristic velocity distribution on the cross-sectional plane normal to the main flow stream. The dynamic trajectories of micro beads of different sizes and materials are visualized and compared for the experimental demonstration. We also discuss the effects of both the shape uniformity of the micro beads and the inlet condition on the size-selective separation.
Dong Hyun Yoon; Jin Bong Ha; Yoen Kyung Bahk; Takahiro Arakawa; Shuichi Shoji; Jeung Sang Go
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Publication Detail:
Type:  Journal Article     Date:  2008-10-21
Journal Detail:
Title:  Lab on a chip     Volume:  9     ISSN:  1473-0197     ISO Abbreviation:  Lab Chip     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-02-11     Completed Date:  2009-03-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101128948     Medline TA:  Lab Chip     Country:  England    
Other Details:
Languages:  eng     Pagination:  87-90     Citation Subset:  -    
School of Mechanical Engineering, Pusan National University, Geumjeong-Gu, Busan 609-735, South Korea.
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