Next Article in Journal
Electrochemical Voltammogram Recording for Identifying Varieties of Ornamental Plants
Previous Article in Journal
Model for Predicting the Micro-Grinding Force of K9 Glass Based on Material Removal Mechanisms
Previous Article in Special Issue
A 3D Printed Jet Mixer for Centrifugal Microfluidic Platforms
Open AccessArticle

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

1
Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey 64849, Mexico
2
Laboratorio Nacional de Manufactura Aditiva y Digital (MADiT), Apodaca, Nuevo Leon 66629, Mexico
3
Centro de Investigación Numericalc, 5 de mayo Oriente 912, Monterrey 64000, Mexico
4
Department of Mechanical Engineering, University of North Texas, 3940 N. Elm. St., Denton, TX 76207, USA
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(11), 970; https://doi.org/10.3390/mi11110970
Received: 29 September 2020 / Revised: 26 October 2020 / Accepted: 28 October 2020 / Published: 29 October 2020
(This article belongs to the Special Issue Analysis, Design and Fabrication of Micromixers)
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. View Full-Text
Keywords: micromixers; split-and-recombine; additive manufacturing; surface metrology; asymmetric split-and-recombine (ASAR); stereolithography; surface roughness; soft tooling micromixers; split-and-recombine; additive manufacturing; surface metrology; asymmetric split-and-recombine (ASAR); stereolithography; surface roughness; soft tooling
Show Figures

Graphical abstract

  • Supplementary File 1:

    ZIP-Document (ZIP, 23 KiB)

  • Externally hosted supplementary file 1
    Doi: https://doi.org/10.6084/m9.figshare.13018979.v1
MDPI and ACS Style

Martínez-López, J.I.; Betancourt Cervantes, H.A.; Cuevas Iturbe, L.D.; Vázquez, E.; Naula, E.A.; Martínez López, A.; Siller, H.R.; Mendoza-Buenrostro, C.; Rodríguez, C.A. Characterization of Soft Tooling Photopolymers and Processes for Micromixing Devices with Variable Cross-Section. Micromachines 2020, 11, 970.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop