Droplet size based separation by deterministic lateral displacement: separating droplets by cell-induced shrinking
2011 (English)In: Lab on a Chip, ISSN 1473-0197, E-ISSN 1473-0189, Vol. 11, no 7, 1305-1310 p.Article in journal (Refereed) Published
We present a novel method for passive separation of microfluidic droplets by size at high throughput using deterministic lateral displacement (DLD). We also show that droplets containing Saccharomyces cerevisiae shrink significantly during incubation while droplets containing only yeast media retain or slightly increase their size. We demonstrate the DLD device by sorting out shrunken yeast-cell containing droplets from 31% larger diameter droplets which were generated at the same time containing only media, present at a >40-fold excess. This demonstrates the resolving power of droplet separation by DLD and establishes that droplets can be separated for a biological property of the droplet contents discriminated by a change of the physical properties of the droplet. Thus suggesting that this technique may be used for e.g. clonal selection. The same device also separates 11 µm from 30 µm droplets at a rate of 12000 droplets per second, more than twofold faster than previously demonstrated passive hydrodynamic separation devices.
Place, publisher, year, edition, pages
2011. Vol. 11, no 7, 1305-1310 p.
MICROFLUIDIC DEVICES, AQUEOUS DROPLET, AMPLIFICATION, EVOLUTION, SYSTEMS
IdentifiersURN: urn:nbn:se:kth:diva-30462DOI: 10.1039/c0lc00688bISI: 000288455100017PubMedID: 21321749ScopusID: 2-s2.0-79952676399OAI: oai:DiVA.org:kth-30462DiVA: diva2:400228
FunderScience for Life Laboratory - a national resource center for high-throughput molecular bioscience
QC 201102252011-02-252011-02-252011-12-07Bibliographically approved