The Liberalization of Microfluidics: Form 2 Benchtop 3D Printing as an Affordable Alternative to Established Manufacturing Methods

Benjamin Heidt, Renato Rogosic*, Silvio Bonni, Juliette Passariello-Jansen, David Dimech, Joe Lowdon, Rocio Arreguin-Campos, Erik Steen Redeker, Kasper Eersels, Hanne Dilien, Bart van Grinsven, Thomas J. Cleij

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Web of Science)

Abstract

In laboratory environments, 3D printing is used for fast prototyping of assays and devices. Stereolithographic (SLA) 3D printers are proven to be the best choice for most researchers due to their small feature size, which is achieved by selectively curing liquid resin using a laser with a small focal point and then forming consecutive layers out of cured polymer. However, in microfluidic applications, where the limits of these machines are reached, the final results are influenced by many factors. In this work, the Form 2 SLA printer is tested to show how to achieve the best printing results for the creation of microfluidic channels. Several test structures are designed and printed with embedded and open channels in different orientations, sizes, and resins. Embedded channels significantly under perform when compared with open surface channels in terms of accuracy. Under the best printing conditions, 500 mu m is the limit for embedded channels, whereas the open surface channels show good accuracy up to widths and depths of 250 mu m.

Original languageEnglish
Article number1900935
Number of pages7
JournalPhysica Status Solidi A-applications and Materials Science
Volume217
Issue number13
DOIs
Publication statusPublished - Jul 2020

Keywords

  • Form 2
  • Formlabs
  • microfluidics
  • 3D printing

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