Manufacturing and wetting low-cost microfluidic cell separation devices

Ryan S. Pawell*, David W. Inglis, Tracie J. Barber, Robert A. Taylor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Deterministic lateral displacement (DLD) is a microfluidic size-based particle separation or filter technology with applications in cell separation and enrichment. Currently, there are no cost-effective manufacturing methods for this promising microfluidic technology. In this fabrication paper, however, we develop a simple, yet robust protocol for thermoplastic DLD devices using regulatory-approved materials and biocompatible methods. The final standalone device allowed for volumetric flow rates of 660 μl min-1 while reducing the manufacturing time to <1 h. Optical profilometry and image analysis were employed to assess manufacturing accuracy and precision; the average replicated post height was 0.48% less than the average post height on the master mold and the average replicated array pitch was 1.1% less than the original design with replicated posts heights of 62.1 ± 5.1 μm (mean ± 6 standard deviations) and replicated array pitches of 35.6 ± 0.31 μm.

Original languageEnglish
Article number056501
Pages (from-to)1-8
Number of pages8
Issue number5
Publication statusPublished - 6 Sep 2013

Bibliographical note

Erratum can be found in Biomicrofluidics, 7(5), 059901, 2013.


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