Ultrafast Self-Assembly of Microscale Particles by Open-Channel Flow

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We developed an ultrafast microfluidic approach to self-assemble microparticles in three dimensions by taking advantage of simple photolithography and capillary action of microparticle-dispersed suspensions. The theoretical principles of high-speed assembly have been explained, and the experimental verifications of the assembly of various sizes of silica microspheres and silica gel microspheres within thin and long open microchannels by using this approach have been demonstrated. We anticipate that the presented technique will be widely used in the semiconductor and Bio-MEMS (microelectromechanical systems) fields because it offers a fast way to control 3D microscale particle assemblies and also has superb compatibility with photolithography, which can lead to an easy integration of particle assembly with existing CMOS (complementary metal oxide-semiconductor) and M EMS fabrication processes.
Publisher
AMER CHEMICAL SOC
Issue Date
2010-04
Language
English
Article Type
Article
Citation

LANGMUIR, v.26, no.7, pp.4661 - 4667

ISSN
0743-7463
DOI
10.1021/la903492w
URI
http://hdl.handle.net/10203/98577
Appears in Collection
ME-Journal Papers(저널논문)
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