Design and fabrication of magnetically functionalized flexible micropillar arrays for rapid and controllable microfluidic mixing
Type
ArticleAuthors
Zhou, BingpuXu, Wei
Syed, Ahad
Chau, Yeungyeung
Chen, Longqing
Siang, Basil Chew Joo
Yassine, Omar

Wu, Xiaoxiao
Gao, Yibo
Zhang, Jingxian
Xiao, Xiao
Kosel, Jürgen

Zhang, Xixiang

Yao, Zhaohui
Wen, Weijia
KAUST Department
Advanced Nanofabrication, Imaging and Characterization Core LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Imaging and Characterization Core Lab
KAUST-HKUST Micro/Nanofluidic Joint Laboratory
Material Science and Engineering Program
Nanofabrication Core Lab
Patterning
Physical Science and Engineering (PSE) Division
Sensing, Magnetism and Microsystems Lab
Date
2015Permanent link to this record
http://hdl.handle.net/10754/347341
Metadata
Show full item recordAbstract
Magnetically functionalized PDMS-based micropillar arrays have been successfully designed, fabricated and implanted for controllable microfluidic mixing. The arrangement of PDMS micropillar arrays inside the microchannel can be flexibly controlled by an external magnetic field. As a consequence, the flow fields inside the microchannel can be regulated at will via magnetic activation conveniently. When a microchannel is implanted with such micropillar arrays, two microstreams can be mixed easily and controllably upon the simple application of an on/off magnetic signal. Mixing efficiencies based on micropillar arrays with different densities were investigated and compared. It was found that micropillar arrays with higher density (i.e. smaller pillar pitch) would render better mixing performance. Our microfluidic system is capable of generating highly reproducible results within many cycles of mixing/non-mixing conversion. We believe that the simple mixing-triggering method together with rapid and controllable mixing control will be extraordinarily valuable for various biological or chemical applications in the future. This journal is © The Royal Society of Chemistry 2015.Citation
Design and fabrication of magnetically functionalized flexible micropillar arrays for rapid and controllable microfluidic mixing 2015 Lab ChipPublisher
Royal Society of Chemistry (RSC)Journal
Lab ChipPubMed ID
25849640Additional Links
http://pubs.rsc.org/en/Content/ArticleLanding/2015/LC/C5LC00173Kae974a485f413a2113503eed53cd6c53
10.1039/C5LC00173K
Scopus Count
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Nanofabrication Core Lab; Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Electrical Engineering Program; Material Science and Engineering Program; Sensing, Magnetism and Microsystems Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionRelated articles
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