One- and two-particle dynamics in microfluidic T-junctions

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© 2013 American Physical Society (APS). http://www.aps.org
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2013
Major/Subject
Mcode
Degree programme
Language
en
Pages
050302/1-5
Series
Physical Review E, Volume 87, Issue 5
Abstract
Advances in precise focusing of colloidal particles in microfluidic systems open up the possibility of using microfluidic junctions for particle separation and filtering applications. We present a comprehensive numerical study of the dynamics of solid and porous microparticles in T-shaped junctions. Good agreement with experimental data is obtained on the location of particle-separating streamlines for single solid particles with realistic parameters corresponding to the experiments. We quantify the changes in the position of the separating line for porous, partially penetrable colloids. A prediction of the full phase diagram for particle separation is presented in the case of two successive particles entering a T-junction. Our results suggest the intriguing possibility of using the one- and two-particle T-junctions as logic gates.
Description
Keywords
colloids, complex fluid, controlled delivery, colloidal computers
Other note
Citation
Ollila, Santtu T. T. & Denniston, Colin & Ala-Nissilä, Tapio. 2013. One- and two-particle dynamics in microfluidic T-junctions. Physical Review E. Volume 87, Issue 5. P. 050302/1-5. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.87.050302.