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Characterization of Soft Tooling Photopolymers and Processes for Micromixing Devices with Variable Cross-Section.

ABSTRACT: In this paper, we characterized an assortment of photopolymers and stereolithography processes to produce 3D-printed molds and polydimethylsiloxane (PDMS) castings of micromixing devices. Once materials and processes were screened, the validation of the soft tooling approach in microfluidic devices was carried out through a case study. An asymmetric split-and-recombine device with different cross-sections was manufactured and tested under different regime conditions (10 < Re < 70). Mixing performances between 3% and 96% were obtained depending on the flow regime and the pitch-to-depth ratio. The study shows that 3D-printed soft tooling can provide other benefits such as multiple cross-sections and other potential layouts on a single mold.

SUBMITTER: Martinez-Lopez JI

PROVIDER: S-EPMC7692576 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Characterization of Soft Tooling Photopolymers and Processes for Micromixing Devices with Variable Cross-Section.

Martínez-López J Israel JI Betancourt Cervantes Héctor Andrés HA Cuevas Iturbe Luis Donaldo LD Vázquez Elisa E Naula Edisson A EA Martínez López Alejandro A Siller Héctor R HR Mendoza-Buenrostro Christian C Rodríguez Ciro A CA

Micromachines 20201029 11

In this paper, we characterized an assortment of photopolymers and stereolithography processes to produce 3D-printed molds and polydimethylsiloxane (PDMS) castings of micromixing devices. Once materials and processes were screened, the validation of the soft tooling approach in microfluidic devices was carried out through a case study. An asymmetric split-and-recombine device with different cross-sections was manufactured and tested under different regime conditions (10 < <i>Re</i> < 70). Mixing ...[more]

PMID: 33138263

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